feat: Real-time Spark Visualization in Tower Dashboard (#612)

Co-authored-by: Kimi Agent <kimi@timmy.local>
Co-committed-by: Kimi Agent <kimi@timmy.local>

scripts/cycle_retro.py

@@ -54,6 +54,7 @@ REPO_ROOT = Path(__file__).resolve().parent.parent
 RETRO_FILE = REPO_ROOT / ".loop" / "retro" / "cycles.jsonl"
 SUMMARY_FILE = REPO_ROOT / ".loop" / "retro" / "summary.json"
 EPOCH_COUNTER_FILE = REPO_ROOT / ".loop" / "retro" / ".epoch_counter"
+CYCLE_RESULT_FILE = REPO_ROOT / ".loop" / "cycle_result.json"
 
 # How many recent entries to include in rolling summary
 SUMMARY_WINDOW = 50
@@ -246,9 +247,37 @@ def update_summary() -> None:
     SUMMARY_FILE.write_text(json.dumps(summary, indent=2) + "\n")
 
 
+def _load_cycle_result() -> dict:
+    """Read .loop/cycle_result.json if it exists; return empty dict on failure."""
+    if not CYCLE_RESULT_FILE.exists():
+        return {}
+    try:
+        raw = CYCLE_RESULT_FILE.read_text().strip()
+        # Strip hermes fence markers (```json ... ```) if present
+        if raw.startswith("```"):
+            lines = raw.splitlines()
+            lines = [l for l in lines if not l.startswith("```")]
+            raw = "\n".join(lines)
+        return json.loads(raw)
+    except (json.JSONDecodeError, OSError):
+        return {}
+
+
 def main() -> None:
     args = parse_args()
 
+    # Backfill from cycle_result.json when CLI args have defaults
+    cr = _load_cycle_result()
+    if cr:
+        if args.issue is None and cr.get("issue"):
+            args.issue = int(cr["issue"])
+        if args.type == "unknown" and cr.get("type"):
+            args.type = cr["type"]
+        if args.tests_passed == 0 and cr.get("tests_passed"):
+            args.tests_passed = int(cr["tests_passed"])
+        if not args.notes and cr.get("notes"):
+            args.notes = cr["notes"]
+
     # Auto-detect issue from branch when not explicitly provided
     if args.issue is None:
         args.issue = detect_issue_from_branch()

src/dashboard/app.py

@@ -46,6 +46,7 @@ from dashboard.routes.tasks import router as tasks_router
 from dashboard.routes.telegram import router as telegram_router
 from dashboard.routes.thinking import router as thinking_router
 from dashboard.routes.tools import router as tools_router
+from dashboard.routes.tower import router as tower_router
 from dashboard.routes.voice import router as voice_router
 from dashboard.routes.work_orders import router as work_orders_router
 from dashboard.routes.world import router as world_router
@@ -583,6 +584,7 @@ app.include_router(system_router)
 app.include_router(experiments_router)
 app.include_router(db_explorer_router)
 app.include_router(world_router)
+app.include_router(tower_router)
 
 
 @app.websocket("/ws")

src/dashboard/routes/calm.py

@@ -19,14 +19,17 @@ router = APIRouter(tags=["calm"])
 
 # Helper functions for state machine logic
 def get_now_task(db: Session) -> Task | None:
+    """Return the single active NOW task, or None."""
     return db.query(Task).filter(Task.state == TaskState.NOW).first()
 
 
 def get_next_task(db: Session) -> Task | None:
+    """Return the single queued NEXT task, or None."""
     return db.query(Task).filter(Task.state == TaskState.NEXT).first()
 
 
 def get_later_tasks(db: Session) -> list[Task]:
+    """Return all LATER tasks ordered by MIT flag then sort_order."""
     return (
         db.query(Task)
         .filter(Task.state == TaskState.LATER)
@@ -36,6 +39,12 @@ def get_later_tasks(db: Session) -> list[Task]:
 
 
 def promote_tasks(db: Session):
+    """Enforce the NOW/NEXT/LATER state machine invariants.
+
+    - At most one NOW task (extras demoted to NEXT).
+    - If no NOW, promote NEXT -> NOW.
+    - If no NEXT, promote highest-priority LATER -> NEXT.
+    """
     # Ensure only one NOW task exists. If multiple, demote extras to NEXT.
     now_tasks = db.query(Task).filter(Task.state == TaskState.NOW).all()
     if len(now_tasks) > 1:
@@ -74,6 +83,7 @@ def promote_tasks(db: Session):
 # Endpoints
 @router.get("/calm", response_class=HTMLResponse)
 async def get_calm_view(request: Request, db: Session = Depends(get_db)):
+    """Render the main CALM dashboard with NOW/NEXT/LATER counts."""
     now_task = get_now_task(db)
     next_task = get_next_task(db)
     later_tasks_count = len(get_later_tasks(db))
@@ -90,6 +100,7 @@ async def get_calm_view(request: Request, db: Session = Depends(get_db)):
 
 @router.get("/calm/ritual/morning", response_class=HTMLResponse)
 async def get_morning_ritual_form(request: Request):
+    """Render the morning ritual intake form."""
     return templates.TemplateResponse(request, "calm/morning_ritual_form.html", {})
 
 
@@ -102,6 +113,7 @@ async def post_morning_ritual(
     mit3_title: str = Form(None),
     other_tasks: str = Form(""),
 ):
+    """Process morning ritual: create MITs, other tasks, and set initial states."""
     # Create Journal Entry
     mit_task_ids = []
     journal_entry = JournalEntry(entry_date=date.today())
@@ -173,6 +185,7 @@ async def post_morning_ritual(
 
 @router.get("/calm/ritual/evening", response_class=HTMLResponse)
 async def get_evening_ritual_form(request: Request, db: Session = Depends(get_db)):
+    """Render the evening ritual form for today's journal entry."""
     journal_entry = db.query(JournalEntry).filter(JournalEntry.entry_date == date.today()).first()
     if not journal_entry:
         raise HTTPException(status_code=404, detail="No journal entry for today")
@@ -189,6 +202,7 @@ async def post_evening_ritual(
     gratitude: str = Form(None),
     energy_level: int = Form(None),
 ):
+    """Process evening ritual: save reflection/gratitude, archive active tasks."""
     journal_entry = db.query(JournalEntry).filter(JournalEntry.entry_date == date.today()).first()
     if not journal_entry:
         raise HTTPException(status_code=404, detail="No journal entry for today")
@@ -223,6 +237,7 @@ async def create_new_task(
     is_mit: bool = Form(False),
     certainty: TaskCertainty = Form(TaskCertainty.SOFT),
 ):
+    """Create a new task in LATER state and return updated count."""
     task = Task(
         title=title,
         description=description,
@@ -247,6 +262,7 @@ async def start_task(
     task_id: int,
     db: Session = Depends(get_db),
 ):
+    """Move a task to NOW state, demoting the current NOW to NEXT."""
     current_now_task = get_now_task(db)
     if current_now_task and current_now_task.id != task_id:
         current_now_task.state = TaskState.NEXT  # Demote current NOW to NEXT
@@ -281,6 +297,7 @@ async def complete_task(
     task_id: int,
     db: Session = Depends(get_db),
 ):
+    """Mark a task as DONE and trigger state promotion."""
     task = db.query(Task).filter(Task.id == task_id).first()
     if not task:
         raise HTTPException(status_code=404, detail="Task not found")
@@ -309,6 +326,7 @@ async def defer_task(
     task_id: int,
     db: Session = Depends(get_db),
 ):
+    """Defer a task and trigger state promotion."""
     task = db.query(Task).filter(Task.id == task_id).first()
     if not task:
         raise HTTPException(status_code=404, detail="Task not found")
@@ -333,6 +351,7 @@ async def defer_task(
 
 @router.get("/calm/partials/later_tasks_list", response_class=HTMLResponse)
 async def get_later_tasks_list(request: Request, db: Session = Depends(get_db)):
+    """Render the expandable list of LATER tasks."""
     later_tasks = get_later_tasks(db)
     return templates.TemplateResponse(
         "calm/partials/later_tasks_list.html",
@@ -348,6 +367,7 @@ async def reorder_tasks(
     later_task_ids: str = Form(""),
     next_task_id: int | None = Form(None),
 ):
+    """Reorder LATER tasks and optionally promote one to NEXT."""
     # Reorder LATER tasks
     if later_task_ids:
         ids_in_order = [int(x.strip()) for x in later_task_ids.split(",") if x.strip()]

src/dashboard/routes/system.py

@@ -16,52 +16,11 @@ router = APIRouter(tags=["system"])
 
 @router.get("/lightning/ledger", response_class=HTMLResponse)
 async def lightning_ledger(request: Request):
-    """Ledger and balance page."""
-    # Mock data for now, as this seems to be a UI-first feature
-    balance = {
-        "available_sats": 1337,
-        "incoming_total_sats": 2000,
-        "outgoing_total_sats": 663,
-        "fees_paid_sats": 5,
-        "net_sats": 1337,
-        "pending_incoming_sats": 0,
-        "pending_outgoing_sats": 0,
-    }
+    """Ledger and balance page backed by the in-memory Lightning ledger."""
+    from lightning.ledger import get_balance, get_transactions
 
-    # Mock transactions
-    from collections import namedtuple
-    from enum import Enum
-
-    class TxType(Enum):
-        incoming = "incoming"
-        outgoing = "outgoing"
-
-    class TxStatus(Enum):
-        completed = "completed"
-        pending = "pending"
-
-    Tx = namedtuple(
-        "Tx", ["tx_type", "status", "amount_sats", "payment_hash", "memo", "created_at"]
-    )
-
-    transactions = [
-        Tx(
-            TxType.outgoing,
-            TxStatus.completed,
-            50,
-            "hash1",
-            "Model inference",
-            "2026-03-04 10:00:00",
-        ),
-        Tx(
-            TxType.incoming,
-            TxStatus.completed,
-            1000,
-            "hash2",
-            "Manual deposit",
-            "2026-03-03 15:00:00",
-        ),
-    ]
+    balance = get_balance()
+    transactions = get_transactions()
 
     return templates.TemplateResponse(
         request,
@@ -70,7 +29,7 @@ async def lightning_ledger(request: Request):
             "balance": balance,
             "transactions": transactions,
             "tx_types": ["incoming", "outgoing"],
-            "tx_statuses": ["completed", "pending"],
+            "tx_statuses": ["pending", "settled", "failed", "expired"],
             "filter_type": None,
             "filter_status": None,
             "stats": {},

src/dashboard/routes/tower.py

@@ -0,0 +1,108 @@
+"""Tower dashboard — real-time Spark visualization via WebSocket.
+
+GET  /tower     — HTML Tower dashboard (Thinking / Predicting / Advising)
+WS   /tower/ws  — WebSocket stream of Spark engine state updates
+"""
+
+import asyncio
+import json
+import logging
+
+from fastapi import APIRouter, Request, WebSocket
+from fastapi.responses import HTMLResponse
+
+from dashboard.templating import templates
+from spark.engine import spark_engine
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/tower", tags=["tower"])
+
+_PUSH_INTERVAL = 5  # seconds between state broadcasts
+
+
+def _spark_snapshot() -> dict:
+    """Build a JSON-serialisable snapshot of Spark state."""
+    status = spark_engine.status()
+
+    timeline = spark_engine.get_timeline(limit=10)
+    events = []
+    for ev in timeline:
+        entry = {
+            "event_type": ev.event_type,
+            "description": ev.description,
+            "importance": ev.importance,
+            "created_at": ev.created_at,
+        }
+        if ev.agent_id:
+            entry["agent_id"] = ev.agent_id[:8]
+        if ev.task_id:
+            entry["task_id"] = ev.task_id[:8]
+        try:
+            entry["data"] = json.loads(ev.data)
+        except (json.JSONDecodeError, TypeError):
+            entry["data"] = {}
+        events.append(entry)
+
+    predictions = spark_engine.get_predictions(limit=5)
+    preds = []
+    for p in predictions:
+        pred = {
+            "task_id": p.task_id[:8] if p.task_id else "?",
+            "accuracy": p.accuracy,
+            "evaluated": p.evaluated_at is not None,
+            "created_at": p.created_at,
+        }
+        try:
+            pred["predicted"] = json.loads(p.predicted_value)
+        except (json.JSONDecodeError, TypeError):
+            pred["predicted"] = {}
+        preds.append(pred)
+
+    advisories = spark_engine.get_advisories()
+    advs = [
+        {
+            "category": a.category,
+            "priority": a.priority,
+            "title": a.title,
+            "detail": a.detail,
+            "suggested_action": a.suggested_action,
+        }
+        for a in advisories
+    ]
+
+    return {
+        "type": "spark_state",
+        "status": status,
+        "events": events,
+        "predictions": preds,
+        "advisories": advs,
+    }
+
+
+@router.get("", response_class=HTMLResponse)
+async def tower_ui(request: Request):
+    """Render the Tower dashboard page."""
+    snapshot = _spark_snapshot()
+    return templates.TemplateResponse(
+        request,
+        "tower.html",
+        {"snapshot": snapshot},
+    )
+
+
+@router.websocket("/ws")
+async def tower_ws(websocket: WebSocket) -> None:
+    """Stream Spark state snapshots to the Tower dashboard."""
+    await websocket.accept()
+    logger.info("Tower WS connected")
+
+    try:
+        # Send initial snapshot
+        await websocket.send_text(json.dumps(_spark_snapshot()))
+
+        while True:
+            await asyncio.sleep(_PUSH_INTERVAL)
+            await websocket.send_text(json.dumps(_spark_snapshot()))
+    except Exception:
+        logger.debug("Tower WS disconnected")

src/dashboard/templates/tower.html

@@ -0,0 +1,180 @@
+{% extends "base.html" %}
+
+{% block title %}Timmy Time — Tower{% endblock %}
+
+{% block extra_styles %}{% endblock %}
+
+{% block content %}
+<div class="container-fluid tower-container py-3">
+
+  <div class="tower-header">
+    <div class="tower-title">TOWER</div>
+    <div class="tower-subtitle">
+      Real-time Spark visualization &mdash;
+      <span id="tower-conn" class="tower-conn-badge tower-conn-connecting">CONNECTING</span>
+    </div>
+  </div>
+
+  <div class="row g-3">
+
+    <!-- Left: THINKING (events) -->
+    <div class="col-12 col-lg-4 d-flex flex-column gap-3">
+      <div class="card mc-panel tower-phase-card">
+        <div class="card-header mc-panel-header tower-phase-thinking">// THINKING</div>
+        <div class="card-body p-3 tower-scroll" id="tower-events">
+          <div class="tower-empty">Waiting for Spark data&hellip;</div>
+        </div>
+      </div>
+    </div>
+
+    <!-- Middle: PREDICTING (EIDOS) -->
+    <div class="col-12 col-lg-4 d-flex flex-column gap-3">
+      <div class="card mc-panel tower-phase-card">
+        <div class="card-header mc-panel-header tower-phase-predicting">// PREDICTING</div>
+        <div class="card-body p-3" id="tower-predictions">
+          <div class="tower-empty">Waiting for Spark data&hellip;</div>
+        </div>
+      </div>
+      <div class="card mc-panel">
+        <div class="card-header mc-panel-header">// EIDOS STATS</div>
+        <div class="card-body p-3">
+          <div class="tower-stat-grid" id="tower-stats">
+            <div class="tower-stat"><span class="tower-stat-label">EVENTS</span><span class="tower-stat-value" id="ts-events">0</span></div>
+            <div class="tower-stat"><span class="tower-stat-label">MEMORIES</span><span class="tower-stat-value" id="ts-memories">0</span></div>
+            <div class="tower-stat"><span class="tower-stat-label">PREDICTIONS</span><span class="tower-stat-value" id="ts-preds">0</span></div>
+            <div class="tower-stat"><span class="tower-stat-label">ACCURACY</span><span class="tower-stat-value" id="ts-accuracy">—</span></div>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- Right: ADVISING -->
+    <div class="col-12 col-lg-4 d-flex flex-column gap-3">
+      <div class="card mc-panel tower-phase-card">
+        <div class="card-header mc-panel-header tower-phase-advising">// ADVISING</div>
+        <div class="card-body p-3 tower-scroll" id="tower-advisories">
+          <div class="tower-empty">Waiting for Spark data&hellip;</div>
+        </div>
+      </div>
+    </div>
+
+  </div>
+</div>
+
+<script>
+(function() {
+  var ws = null;
+  var badge = document.getElementById('tower-conn');
+
+  function setConn(state) {
+    badge.textContent = state.toUpperCase();
+    badge.className = 'tower-conn-badge tower-conn-' + state;
+  }
+
+  function esc(s) { var d = document.createElement('div'); d.textContent = s; return d.innerHTML; }
+
+  function renderEvents(events) {
+    var el = document.getElementById('tower-events');
+    if (!events || !events.length) { el.innerHTML = '<div class="tower-empty">No events captured yet.</div>'; return; }
+    var html = '';
+    for (var i = 0; i < events.length; i++) {
+      var ev = events[i];
+      var dots = ev.importance >= 0.8 ? '\u25cf\u25cf\u25cf' : ev.importance >= 0.5 ? '\u25cf\u25cf' : '\u25cf';
+      html += '<div class="tower-event tower-etype-' + esc(ev.event_type) + '">'
+        + '<div class="tower-ev-head">'
+        + '<span class="tower-ev-badge">' + esc(ev.event_type.replace(/_/g, ' ').toUpperCase()) + '</span>'
+        + '<span class="tower-ev-dots">' + dots + '</span>'
+        + '</div>'
+        + '<div class="tower-ev-desc">' + esc(ev.description) + '</div>'
+        + '<div class="tower-ev-time">' + esc((ev.created_at || '').slice(0, 19)) + '</div>'
+        + '</div>';
+    }
+    el.innerHTML = html;
+  }
+
+  function renderPredictions(preds) {
+    var el = document.getElementById('tower-predictions');
+    if (!preds || !preds.length) { el.innerHTML = '<div class="tower-empty">No predictions yet.</div>'; return; }
+    var html = '';
+    for (var i = 0; i < preds.length; i++) {
+      var p = preds[i];
+      var cls = p.evaluated ? 'tower-pred-done' : 'tower-pred-pending';
+      var accTxt = p.accuracy != null ? Math.round(p.accuracy * 100) + '%' : 'PENDING';
+      var accCls = p.accuracy != null ? (p.accuracy >= 0.7 ? 'text-success' : p.accuracy < 0.4 ? 'text-danger' : 'text-warning') : '';
+      html += '<div class="tower-pred ' + cls + '">'
+        + '<div class="tower-pred-head">'
+        + '<span class="tower-pred-task">' + esc(p.task_id) + '</span>'
+        + '<span class="tower-pred-acc ' + accCls + '">' + accTxt + '</span>'
+        + '</div>';
+      if (p.predicted) {
+        var pr = p.predicted;
+        html += '<div class="tower-pred-detail">';
+        if (pr.likely_winner) html += '<span>Winner: ' + esc(pr.likely_winner.slice(0, 8)) + '</span> ';
+        if (pr.success_probability != null) html += '<span>Success: ' + Math.round(pr.success_probability * 100) + '%</span> ';
+        html += '</div>';
+      }
+      html += '<div class="tower-ev-time">' + esc((p.created_at || '').slice(0, 19)) + '</div>'
+        + '</div>';
+    }
+    el.innerHTML = html;
+  }
+
+  function renderAdvisories(advs) {
+    var el = document.getElementById('tower-advisories');
+    if (!advs || !advs.length) { el.innerHTML = '<div class="tower-empty">No advisories yet.</div>'; return; }
+    var html = '';
+    for (var i = 0; i < advs.length; i++) {
+      var a = advs[i];
+      var prio = a.priority >= 0.7 ? 'high' : a.priority >= 0.4 ? 'medium' : 'low';
+      html += '<div class="tower-advisory tower-adv-' + prio + '">'
+        + '<div class="tower-adv-head">'
+        + '<span class="tower-adv-cat">' + esc(a.category.replace(/_/g, ' ').toUpperCase()) + '</span>'
+        + '<span class="tower-adv-prio">' + Math.round(a.priority * 100) + '%</span>'
+        + '</div>'
+        + '<div class="tower-adv-title">' + esc(a.title) + '</div>'
+        + '<div class="tower-adv-detail">' + esc(a.detail) + '</div>'
+        + '<div class="tower-adv-action">' + esc(a.suggested_action) + '</div>'
+        + '</div>';
+    }
+    el.innerHTML = html;
+  }
+
+  function renderStats(status) {
+    if (!status) return;
+    document.getElementById('ts-events').textContent = status.events_captured || 0;
+    document.getElementById('ts-memories').textContent = status.memories_stored || 0;
+    var p = status.predictions || {};
+    document.getElementById('ts-preds').textContent = p.total_predictions || 0;
+    var acc = p.avg_accuracy;
+    var accEl = document.getElementById('ts-accuracy');
+    if (acc != null) {
+      accEl.textContent = Math.round(acc * 100) + '%';
+      accEl.className = 'tower-stat-value ' + (acc >= 0.7 ? 'text-success' : acc < 0.4 ? 'text-danger' : 'text-warning');
+    } else {
+      accEl.textContent = '\u2014';
+    }
+  }
+
+  function handleMsg(data) {
+    if (data.type !== 'spark_state') return;
+    renderEvents(data.events);
+    renderPredictions(data.predictions);
+    renderAdvisories(data.advisories);
+    renderStats(data.status);
+  }
+
+  function connect() {
+    var proto = location.protocol === 'https:' ? 'wss:' : 'ws:';
+    ws = new WebSocket(proto + '//' + location.host + '/tower/ws');
+    ws.onopen = function() { setConn('live'); };
+    ws.onclose = function() { setConn('offline'); setTimeout(connect, 3000); };
+    ws.onerror = function() { setConn('offline'); };
+    ws.onmessage = function(e) {
+      try { handleMsg(JSON.parse(e.data)); } catch(err) { console.error('Tower WS parse error', err); }
+    };
+  }
+
+  connect();
+})();
+</script>
+{% endblock %}

src/infrastructure/router/__init__.py

@@ -2,6 +2,7 @@
 
 from .api import router
 from .cascade import CascadeRouter, Provider, ProviderStatus, get_router
+from .history import HealthHistoryStore, get_history_store
 
 __all__ = [
     "CascadeRouter",
@@ -9,4 +10,6 @@ __all__ = [
     "ProviderStatus",
     "get_router",
     "router",
+    "HealthHistoryStore",
+    "get_history_store",
 ]

src/infrastructure/router/api.py

@@ -8,6 +8,7 @@ from fastapi import APIRouter, Depends, HTTPException
 from pydantic import BaseModel
 
 from .cascade import CascadeRouter, get_router
+from .history import HealthHistoryStore, get_history_store
 
 logger = logging.getLogger(__name__)
 router = APIRouter(prefix="/api/v1/router", tags=["router"])
@@ -199,6 +200,17 @@ async def reload_config(
         raise HTTPException(status_code=500, detail=f"Reload failed: {exc}") from exc
 
 
+@router.get("/history")
+async def get_history(
+    hours: int = 24,
+    store: Annotated[HealthHistoryStore, Depends(get_history_store)] = None,
+) -> list[dict[str, Any]]:
+    """Get provider health history for the last N hours."""
+    if store is None:
+        store = get_history_store()
+    return store.get_history(hours=hours)
+
+
 @router.get("/config")
 async def get_config(
     cascade: Annotated[CascadeRouter, Depends(get_cascade_router)],

src/infrastructure/router/history.py

@@ -0,0 +1,152 @@
+"""Provider health history — time-series snapshots for dashboard visualization."""
+
+import asyncio
+import logging
+import sqlite3
+from datetime import UTC, datetime, timedelta
+from pathlib import Path
+
+logger = logging.getLogger(__name__)
+
+_store: "HealthHistoryStore | None" = None
+
+
+class HealthHistoryStore:
+    """Stores timestamped provider health snapshots in SQLite."""
+
+    def __init__(self, db_path: str = "data/router_history.db") -> None:
+        self.db_path = db_path
+        if db_path != ":memory:":
+            Path(db_path).parent.mkdir(parents=True, exist_ok=True)
+        self._conn = sqlite3.connect(db_path, check_same_thread=False)
+        self._conn.row_factory = sqlite3.Row
+        self._init_schema()
+        self._bg_task: asyncio.Task | None = None
+
+    def _init_schema(self) -> None:
+        self._conn.execute("""
+            CREATE TABLE IF NOT EXISTS snapshots (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                timestamp TEXT NOT NULL,
+                provider_name TEXT NOT NULL,
+                status TEXT NOT NULL,
+                error_rate REAL NOT NULL,
+                avg_latency_ms REAL NOT NULL,
+                circuit_state TEXT NOT NULL,
+                total_requests INTEGER NOT NULL
+            )
+        """)
+        self._conn.execute("""
+            CREATE INDEX IF NOT EXISTS idx_snapshots_ts
+            ON snapshots(timestamp)
+        """)
+        self._conn.commit()
+
+    def record_snapshot(self, providers: list[dict]) -> None:
+        """Record a health snapshot for all providers."""
+        ts = datetime.now(UTC).isoformat()
+        rows = [
+            (
+                ts,
+                p["name"],
+                p["status"],
+                p["error_rate"],
+                p["avg_latency_ms"],
+                p["circuit_state"],
+                p["total_requests"],
+            )
+            for p in providers
+        ]
+        self._conn.executemany(
+            """INSERT INTO snapshots
+               (timestamp, provider_name, status, error_rate,
+                avg_latency_ms, circuit_state, total_requests)
+               VALUES (?, ?, ?, ?, ?, ?, ?)""",
+            rows,
+        )
+        self._conn.commit()
+
+    def get_history(self, hours: int = 24) -> list[dict]:
+        """Return snapshots from the last N hours, grouped by timestamp."""
+        cutoff = (datetime.now(UTC) - timedelta(hours=hours)).isoformat()
+        rows = self._conn.execute(
+            """SELECT timestamp, provider_name, status, error_rate,
+                      avg_latency_ms, circuit_state, total_requests
+               FROM snapshots WHERE timestamp >= ? ORDER BY timestamp""",
+            (cutoff,),
+        ).fetchall()
+
+        # Group by timestamp
+        snapshots: dict[str, list[dict]] = {}
+        for row in rows:
+            ts = row["timestamp"]
+            if ts not in snapshots:
+                snapshots[ts] = []
+            snapshots[ts].append(
+                {
+                    "name": row["provider_name"],
+                    "status": row["status"],
+                    "error_rate": row["error_rate"],
+                    "avg_latency_ms": row["avg_latency_ms"],
+                    "circuit_state": row["circuit_state"],
+                    "total_requests": row["total_requests"],
+                }
+            )
+
+        return [{"timestamp": ts, "providers": providers} for ts, providers in snapshots.items()]
+
+    def prune(self, keep_hours: int = 168) -> int:
+        """Remove snapshots older than keep_hours. Returns rows deleted."""
+        cutoff = (datetime.now(UTC) - timedelta(hours=keep_hours)).isoformat()
+        cursor = self._conn.execute("DELETE FROM snapshots WHERE timestamp < ?", (cutoff,))
+        self._conn.commit()
+        return cursor.rowcount
+
+    def close(self) -> None:
+        """Close the database connection."""
+        if self._bg_task and not self._bg_task.done():
+            self._bg_task.cancel()
+        self._conn.close()
+
+    def _capture_snapshot(self, cascade_router) -> None:  # noqa: ANN001
+        """Capture current provider state as a snapshot."""
+        providers = []
+        for p in cascade_router.providers:
+            providers.append(
+                {
+                    "name": p.name,
+                    "status": p.status.value,
+                    "error_rate": round(p.metrics.error_rate, 4),
+                    "avg_latency_ms": round(p.metrics.avg_latency_ms, 2),
+                    "circuit_state": p.circuit_state.value,
+                    "total_requests": p.metrics.total_requests,
+                }
+            )
+        self.record_snapshot(providers)
+
+    async def start_background_task(
+        self,
+        cascade_router,
+        interval_seconds: int = 60,  # noqa: ANN001
+    ) -> None:
+        """Start periodic snapshot capture."""
+
+        async def _loop() -> None:
+            while True:
+                try:
+                    self._capture_snapshot(cascade_router)
+                    logger.debug("Recorded health snapshot")
+                except Exception:
+                    logger.exception("Failed to record health snapshot")
+                await asyncio.sleep(interval_seconds)
+
+        self._bg_task = asyncio.create_task(_loop())
+        logger.info("Health history background task started (interval=%ds)", interval_seconds)
+
+
+def get_history_store() -> HealthHistoryStore:
+    """Get or create the singleton history store."""
+    global _store  # noqa: PLW0603
+    if _store is None:
+        _store = HealthHistoryStore()
+    return _store

src/integrations/chat_bridge/vendors/discord.py

@@ -515,25 +515,36 @@ class DiscordVendor(ChatPlatform):
 
     async def _handle_message(self, message) -> None:
         """Process an incoming message and respond via a thread."""
-        # Strip the bot mention from the message content
-        content = message.content
-        if self._client.user:
-            content = content.replace(f"<@{self._client.user.id}>", "").strip()
-
+        content = self._extract_content(message)
         if not content:
             return
 
-        # Create or reuse a thread for this conversation
         thread = await self._get_or_create_thread(message)
         target = thread or message.channel
+        session_id = f"discord_{thread.id}" if thread else f"discord_{message.channel.id}"
 
-        # Derive session_id for per-conversation history via Agno's SQLite
-        if thread:
-            session_id = f"discord_{thread.id}"
-        else:
-            session_id = f"discord_{message.channel.id}"
+        run_output, response = await self._invoke_agent(content, session_id, target)
 
-        # Run Timmy agent with typing indicator and timeout
+        if run_output is not None:
+            await self._handle_paused_run(run_output, target, session_id)
+            raw_content = run_output.content if hasattr(run_output, "content") else ""
+            response = _clean_response(raw_content or "")
+
+        await self._send_response(response, target)
+
+    def _extract_content(self, message) -> str:
+        """Strip the bot mention and return clean message text."""
+        content = message.content
+        if self._client.user:
+            content = content.replace(f"<@{self._client.user.id}>", "").strip()
+        return content
+
+    async def _invoke_agent(self, content: str, session_id: str, target):
+        """Run chat_with_tools with a typing indicator and timeout.
+
+        Returns a (run_output, error_response) tuple.  On success the
+        error_response is ``None``; on failure run_output is ``None``.
+        """
         run_output = None
         response = None
         try:
@@ -548,51 +559,57 @@ class DiscordVendor(ChatPlatform):
         except Exception as exc:
             logger.error("Discord: chat_with_tools() failed: %s", exc)
             response = "I'm having trouble reaching my inference backend right now. Please try again shortly."
+        return run_output, response
 
-        # Check if Agno paused the run for tool confirmation
-        if run_output is not None:
-            status = getattr(run_output, "status", None)
-            is_paused = status == "PAUSED" or str(status) == "RunStatus.paused"
+    async def _handle_paused_run(self, run_output, target, session_id: str) -> None:
+        """If Agno paused the run for tool confirmation, enqueue approvals."""
+        status = getattr(run_output, "status", None)
+        is_paused = status == "PAUSED" or str(status) == "RunStatus.paused"
 
-            if is_paused and getattr(run_output, "active_requirements", None):
-                from config import settings
+        if not (is_paused and getattr(run_output, "active_requirements", None)):
+            return
 
-                if settings.discord_confirm_actions:
-                    for req in run_output.active_requirements:
-                        if getattr(req, "needs_confirmation", False):
-                            te = req.tool_execution
-                            tool_name = getattr(te, "tool_name", "unknown")
-                            tool_args = getattr(te, "tool_args", {}) or {}
+        from config import settings
 
-                            from timmy.approvals import create_item
+        if not settings.discord_confirm_actions:
+            return
 
-                            item = create_item(
-                                title=f"Discord: {tool_name}",
-                                description=_format_action_description(tool_name, tool_args),
-                                proposed_action=json.dumps({"tool": tool_name, "args": tool_args}),
-                                impact=_get_impact_level(tool_name),
-                            )
-                            self._pending_actions[item.id] = {
-                                "run_output": run_output,
-                                "requirement": req,
-                                "tool_name": tool_name,
-                                "tool_args": tool_args,
-                                "target": target,
-                                "session_id": session_id,
-                            }
-                            await self._send_confirmation(target, tool_name, tool_args, item.id)
+        for req in run_output.active_requirements:
+            if not getattr(req, "needs_confirmation", False):
+                continue
+            te = req.tool_execution
+            tool_name = getattr(te, "tool_name", "unknown")
+            tool_args = getattr(te, "tool_args", {}) or {}
 
-            raw_content = run_output.content if hasattr(run_output, "content") else ""
-            response = _clean_response(raw_content or "")
+            from timmy.approvals import create_item
 
-        # Discord has a 2000 character limit — send with error handling
-        if response and response.strip():
-            for chunk in _chunk_message(response, 2000):
-                try:
-                    await target.send(chunk)
-                except Exception as exc:
-                    logger.error("Discord: failed to send message chunk: %s", exc)
-                    break
+            item = create_item(
+                title=f"Discord: {tool_name}",
+                description=_format_action_description(tool_name, tool_args),
+                proposed_action=json.dumps({"tool": tool_name, "args": tool_args}),
+                impact=_get_impact_level(tool_name),
+            )
+            self._pending_actions[item.id] = {
+                "run_output": run_output,
+                "requirement": req,
+                "tool_name": tool_name,
+                "tool_args": tool_args,
+                "target": target,
+                "session_id": session_id,
+            }
+            await self._send_confirmation(target, tool_name, tool_args, item.id)
+
+    @staticmethod
+    async def _send_response(response: str | None, target) -> None:
+        """Send a response to Discord, chunked to the 2000-char limit."""
+        if not response or not response.strip():
+            return
+        for chunk in _chunk_message(response, 2000):
+            try:
+                await target.send(chunk)
+            except Exception as exc:
+                logger.error("Discord: failed to send message chunk: %s", exc)
+                break
 
     async def _get_or_create_thread(self, message):
         """Get the active thread for a channel, or create one.

src/lightning/__init__.py

@@ -0,0 +1 @@
+"""Lightning Network integration for tool-usage micro-payments."""

src/lightning/factory.py

@@ -0,0 +1,69 @@
+"""Lightning backend factory.
+
+Returns a mock or real LND backend based on ``settings.lightning_backend``.
+"""
+
+from __future__ import annotations
+
+import hashlib
+import logging
+import secrets
+from dataclasses import dataclass
+
+from config import settings
+
+logger = logging.getLogger(__name__)
+
+
+@dataclass
+class Invoice:
+    """Minimal Lightning invoice representation."""
+
+    payment_hash: str
+    payment_request: str
+    amount_sats: int
+    memo: str
+
+
+class MockBackend:
+    """In-memory mock Lightning backend for development and testing."""
+
+    def create_invoice(self, amount_sats: int, memo: str = "") -> Invoice:
+        """Create a fake invoice with a random payment hash."""
+        raw = secrets.token_bytes(32)
+        payment_hash = hashlib.sha256(raw).hexdigest()
+        payment_request = f"lnbc{amount_sats}mock{payment_hash[:20]}"
+        logger.debug("Mock invoice: %s sats — %s", amount_sats, payment_hash[:12])
+        return Invoice(
+            payment_hash=payment_hash,
+            payment_request=payment_request,
+            amount_sats=amount_sats,
+            memo=memo,
+        )
+
+
+# Singleton — lazily created
+_backend: MockBackend | None = None
+
+
+def get_backend() -> MockBackend:
+    """Return the configured Lightning backend (currently mock-only).
+
+    Raises ``ValueError`` if an unsupported backend is requested.
+    """
+    global _backend  # noqa: PLW0603
+    if _backend is not None:
+        return _backend
+
+    kind = settings.lightning_backend
+    if kind == "mock":
+        _backend = MockBackend()
+    elif kind == "lnd":
+        # LND gRPC integration is on the roadmap — for now fall back to mock.
+        logger.warning("LND backend not yet implemented — using mock")
+        _backend = MockBackend()
+    else:
+        raise ValueError(f"Unknown lightning_backend: {kind!r}")
+
+    logger.info("Lightning backend: %s", kind)
+    return _backend

src/lightning/ledger.py

@@ -0,0 +1,146 @@
+"""In-memory Lightning transaction ledger.
+
+Tracks invoices, settlements, and balances per the schema in
+``docs/adr/018-lightning-ledger.md``.  Uses a simple in-memory list so the
+dashboard can display real (ephemeral) data without requiring SQLite yet.
+"""
+
+from __future__ import annotations
+
+import logging
+import uuid
+from dataclasses import dataclass
+from datetime import UTC, datetime
+from enum import StrEnum
+
+logger = logging.getLogger(__name__)
+
+
+class TxType(StrEnum):
+    incoming = "incoming"
+    outgoing = "outgoing"
+
+
+class TxStatus(StrEnum):
+    pending = "pending"
+    settled = "settled"
+    failed = "failed"
+    expired = "expired"
+
+
+@dataclass
+class LedgerEntry:
+    """Single ledger row matching the ADR-018 schema."""
+
+    id: str
+    tx_type: TxType
+    status: TxStatus
+    payment_hash: str
+    amount_sats: int
+    memo: str
+    source: str
+    created_at: str
+    invoice: str = ""
+    preimage: str = ""
+    task_id: str = ""
+    agent_id: str = ""
+    settled_at: str = ""
+    fee_sats: int = 0
+
+
+# ── In-memory store ──────────────────────────────────────────────────
+_entries: list[LedgerEntry] = []
+
+
+def create_invoice_entry(
+    payment_hash: str,
+    amount_sats: int,
+    memo: str = "",
+    source: str = "tool_usage",
+    task_id: str = "",
+    agent_id: str = "",
+    invoice: str = "",
+) -> LedgerEntry:
+    """Record a new incoming invoice in the ledger."""
+    entry = LedgerEntry(
+        id=uuid.uuid4().hex[:16],
+        tx_type=TxType.incoming,
+        status=TxStatus.pending,
+        payment_hash=payment_hash,
+        amount_sats=amount_sats,
+        memo=memo,
+        source=source,
+        task_id=task_id,
+        agent_id=agent_id,
+        invoice=invoice,
+        created_at=datetime.now(UTC).isoformat(),
+    )
+    _entries.append(entry)
+    logger.debug("Ledger entry created: %s (%s sats)", entry.id, amount_sats)
+    return entry
+
+
+def mark_settled(payment_hash: str, preimage: str = "") -> LedgerEntry | None:
+    """Mark a pending entry as settled by payment hash."""
+    for entry in _entries:
+        if entry.payment_hash == payment_hash and entry.status == TxStatus.pending:
+            entry.status = TxStatus.settled
+            entry.preimage = preimage
+            entry.settled_at = datetime.now(UTC).isoformat()
+            logger.debug("Ledger settled: %s", payment_hash[:12])
+            return entry
+    return None
+
+
+def get_balance() -> dict:
+    """Compute the current balance from settled and pending entries."""
+    incoming_total = sum(
+        e.amount_sats
+        for e in _entries
+        if e.tx_type == TxType.incoming and e.status == TxStatus.settled
+    )
+    outgoing_total = sum(
+        e.amount_sats
+        for e in _entries
+        if e.tx_type == TxType.outgoing and e.status == TxStatus.settled
+    )
+    fees = sum(e.fee_sats for e in _entries if e.status == TxStatus.settled)
+    pending_in = sum(
+        e.amount_sats
+        for e in _entries
+        if e.tx_type == TxType.incoming and e.status == TxStatus.pending
+    )
+    pending_out = sum(
+        e.amount_sats
+        for e in _entries
+        if e.tx_type == TxType.outgoing and e.status == TxStatus.pending
+    )
+    net = incoming_total - outgoing_total - fees
+    return {
+        "incoming_total_sats": incoming_total,
+        "outgoing_total_sats": outgoing_total,
+        "fees_paid_sats": fees,
+        "net_sats": net,
+        "pending_incoming_sats": pending_in,
+        "pending_outgoing_sats": pending_out,
+        "available_sats": net - pending_out,
+    }
+
+
+def get_transactions(
+    tx_type: str | None = None,
+    status: str | None = None,
+    limit: int = 50,
+) -> list[LedgerEntry]:
+    """Return ledger entries, optionally filtered."""
+    result = _entries
+    if tx_type:
+        result = [e for e in result if e.tx_type.value == tx_type]
+    if status:
+        result = [e for e in result if e.status.value == status]
+    return list(reversed(result))[:limit]
+
+
+def clear() -> None:
+    """Reset the ledger (for testing)."""
+    _entries.clear()

src/timmy/agents/base.py

@@ -119,75 +119,84 @@ class BaseAgent(ABC):
         """
         pass
 
-    async def run(self, message: str) -> str:
-        """Run the agent with a message.
+    # Transient errors that indicate Ollama contention or temporary
+    # unavailability — these deserve a retry with backoff.
+    _TRANSIENT = (
+        httpx.ConnectError,
+        httpx.ReadError,
+        httpx.ReadTimeout,
+        httpx.ConnectTimeout,
+        ConnectionError,
+        TimeoutError,
+    )
 
-        Retries on transient failures (connection errors, timeouts) with
-        exponential backoff.  GPU contention from concurrent Ollama
-        requests causes ReadError / ReadTimeout — these are transient
-        and should be retried, not raised immediately (#70).
+    async def run(self, message: str, *, max_retries: int = 3) -> str:
+        """Run the agent with a message, retrying on transient failures.
 
-        Returns:
-            Agent response
+        GPU contention from concurrent Ollama requests causes ReadError /
+        ReadTimeout — these are transient and retried with exponential
+        backoff (#70).
         """
-        max_retries = 3
-        last_exception = None
-        # Transient errors that indicate Ollama contention or temporary
-        # unavailability — these deserve a retry with backoff.
-        _transient = (
-            httpx.ConnectError,
-            httpx.ReadError,
-            httpx.ReadTimeout,
-            httpx.ConnectTimeout,
-            ConnectionError,
-            TimeoutError,
-        )
+        response = await self._run_with_retries(message, max_retries)
+        await self._emit_response_event(message, response)
+        return response
 
+    async def _run_with_retries(self, message: str, max_retries: int) -> str:
+        """Execute agent.run() with retry logic for transient errors."""
         for attempt in range(1, max_retries + 1):
             try:
                 result = self.agent.run(message, stream=False)
-                response = result.content if hasattr(result, "content") else str(result)
-                break  # Success, exit the retry loop
-            except _transient as exc:
-                last_exception = exc
-                if attempt < max_retries:
-                    # Contention backoff — longer waits because the GPU
-                    # needs time to finish the other request.
-                    wait = min(2**attempt, 16)
-                    logger.warning(
-                        "Ollama contention on attempt %d/%d: %s. Waiting %ds before retry...",
-                        attempt,
-                        max_retries,
-                        type(exc).__name__,
-                        wait,
-                    )
-                    await asyncio.sleep(wait)
-                else:
-                    logger.error(
-                        "Ollama unreachable after %d attempts: %s",
-                        max_retries,
-                        exc,
-                    )
-                    raise last_exception from exc
+                return result.content if hasattr(result, "content") else str(result)
+            except self._TRANSIENT as exc:
+                self._handle_retry_or_raise(
+                    exc,
+                    attempt,
+                    max_retries,
+                    transient=True,
+                )
+                await asyncio.sleep(min(2**attempt, 16))
             except Exception as exc:
-                last_exception = exc
-                if attempt < max_retries:
-                    logger.warning(
-                        "Agent run failed on attempt %d/%d: %s. Retrying...",
-                        attempt,
-                        max_retries,
-                        exc,
-                    )
-                    await asyncio.sleep(min(2 ** (attempt - 1), 8))
-                else:
-                    logger.error(
-                        "Agent run failed after %d attempts: %s",
-                        max_retries,
-                        exc,
-                    )
-                    raise last_exception from exc
+                self._handle_retry_or_raise(
+                    exc,
+                    attempt,
+                    max_retries,
+                    transient=False,
+                )
+                await asyncio.sleep(min(2 ** (attempt - 1), 8))
+        # Unreachable — _handle_retry_or_raise raises on last attempt.
+        raise RuntimeError("retry loop exited unexpectedly")  # pragma: no cover
 
-        # Emit completion event
+    @staticmethod
+    def _handle_retry_or_raise(
+        exc: Exception,
+        attempt: int,
+        max_retries: int,
+        *,
+        transient: bool,
+    ) -> None:
+        """Log a retry warning or raise after exhausting attempts."""
+        if attempt < max_retries:
+            if transient:
+                logger.warning(
+                    "Ollama contention on attempt %d/%d: %s. Waiting before retry...",
+                    attempt,
+                    max_retries,
+                    type(exc).__name__,
+                )
+            else:
+                logger.warning(
+                    "Agent run failed on attempt %d/%d: %s. Retrying...",
+                    attempt,
+                    max_retries,
+                    exc,
+                )
+        else:
+            label = "Ollama unreachable" if transient else "Agent run failed"
+            logger.error("%s after %d attempts: %s", label, max_retries, exc)
+            raise exc
+
+    async def _emit_response_event(self, message: str, response: str) -> None:
+        """Publish a completion event to the event bus if connected."""
         if self.event_bus:
             await self.event_bus.publish(
                 Event(
@@ -197,8 +206,6 @@ class BaseAgent(ABC):
                 )
             )
 
-        return response
-
     def get_capabilities(self) -> list[str]:
         """Get list of capabilities this agent provides."""
         return self.tools

src/timmy/cli.py

@@ -37,6 +37,35 @@ def _is_interactive() -> bool:
     return hasattr(sys.stdin, "isatty") and sys.stdin.isatty()
 
 
+def _prompt_interactive(req, tool_name: str, tool_args: dict) -> None:
+    """Display tool details and prompt the human for approval."""
+    description = format_action_description(tool_name, tool_args)
+    impact = get_impact_level(tool_name)
+
+    typer.echo()
+    typer.echo(typer.style("Tool confirmation required", bold=True))
+    typer.echo(f"  Impact: {impact.upper()}")
+    typer.echo(f"  {description}")
+    typer.echo()
+
+    if typer.confirm("Allow this action?", default=False):
+        req.confirm()
+        logger.info("CLI: approved %s", tool_name)
+    else:
+        req.reject(note="User rejected from CLI")
+        logger.info("CLI: rejected %s", tool_name)
+
+
+def _decide_autonomous(req, tool_name: str, tool_args: dict) -> None:
+    """Auto-approve allowlisted tools; reject everything else."""
+    if is_allowlisted(tool_name, tool_args):
+        req.confirm()
+        logger.info("AUTO-APPROVED (allowlist): %s", tool_name)
+    else:
+        req.reject(note="Auto-rejected: not in allowlist")
+        logger.info("AUTO-REJECTED (not allowlisted): %s %s", tool_name, str(tool_args)[:100])
+
+
 def _handle_tool_confirmation(agent, run_output, session_id: str, *, autonomous: bool = False):
     """Prompt user to approve/reject dangerous tool calls.
 
@@ -51,6 +80,7 @@ def _handle_tool_confirmation(agent, run_output, session_id: str, *, autonomous:
     Returns the final RunOutput after all confirmations are resolved.
     """
     interactive = _is_interactive() and not autonomous
+    decide = _prompt_interactive if interactive else _decide_autonomous
 
     max_rounds = 10  # safety limit
     for _ in range(max_rounds):
@@ -66,39 +96,10 @@ def _handle_tool_confirmation(agent, run_output, session_id: str, *, autonomous:
         for req in reqs:
             if not getattr(req, "needs_confirmation", False):
                 continue
-
             te = req.tool_execution
             tool_name = getattr(te, "tool_name", "unknown")
             tool_args = getattr(te, "tool_args", {}) or {}
-
-            if interactive:
-                # Human present — prompt for approval
-                description = format_action_description(tool_name, tool_args)
-                impact = get_impact_level(tool_name)
-
-                typer.echo()
-                typer.echo(typer.style("Tool confirmation required", bold=True))
-                typer.echo(f"  Impact: {impact.upper()}")
-                typer.echo(f"  {description}")
-                typer.echo()
-
-                approved = typer.confirm("Allow this action?", default=False)
-                if approved:
-                    req.confirm()
-                    logger.info("CLI: approved %s", tool_name)
-                else:
-                    req.reject(note="User rejected from CLI")
-                    logger.info("CLI: rejected %s", tool_name)
-            else:
-                # Autonomous mode — check allowlist
-                if is_allowlisted(tool_name, tool_args):
-                    req.confirm()
-                    logger.info("AUTO-APPROVED (allowlist): %s", tool_name)
-                else:
-                    req.reject(note="Auto-rejected: not in allowlist")
-                    logger.info(
-                        "AUTO-REJECTED (not allowlisted): %s %s", tool_name, str(tool_args)[:100]
-                    )
+            decide(req, tool_name, tool_args)
 
         # Resume the run so the agent sees the confirmation result
         try:
@@ -138,7 +139,7 @@ def think(
     model_size: str | None = _MODEL_SIZE_OPTION,
 ):
     """Ask Timmy to think carefully about a topic."""
-    timmy = create_timmy(backend=backend, model_size=model_size, session_id=_CLI_SESSION_ID)
+    timmy = create_timmy(backend=backend, session_id=_CLI_SESSION_ID)
     timmy.print_response(f"Think carefully about: {topic}", stream=True, session_id=_CLI_SESSION_ID)
 
 
@@ -201,7 +202,7 @@ def chat(
         session_id = str(uuid.uuid4())
     else:
         session_id = _CLI_SESSION_ID
-    timmy = create_timmy(backend=backend, model_size=model_size, session_id=session_id)
+    timmy = create_timmy(backend=backend, session_id=session_id)
 
     # Use agent.run() so we can intercept paused runs for tool confirmation.
     run_output = timmy.run(message_str, stream=False, session_id=session_id)
@@ -278,7 +279,7 @@ def status(
     model_size: str | None = _MODEL_SIZE_OPTION,
 ):
     """Print Timmy's operational status."""
-    timmy = create_timmy(backend=backend, model_size=model_size, session_id=_CLI_SESSION_ID)
+    timmy = create_timmy(backend=backend, session_id=_CLI_SESSION_ID)
     timmy.print_response(STATUS_PROMPT, stream=False, session_id=_CLI_SESSION_ID)
 
 

src/timmy/mcp_tools.py

@@ -21,6 +21,10 @@ Usage::
 from __future__ import annotations
 
 import logging
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from PIL import ImageDraw
 import os
 import shutil
 import sqlite3
@@ -270,20 +274,8 @@ async def create_gitea_issue_via_mcp(title: str, body: str = "", labels: str = "
         return f"Failed to create issue via MCP: {exc}"
 
 
-def _generate_avatar_image() -> bytes:
-    """Generate a Timmy-themed avatar image using Pillow.
-
-    Creates a 512x512 wizard-themed avatar with emerald/purple/gold palette.
-    Returns raw PNG bytes. Falls back to a minimal solid-color image if
-    Pillow drawing primitives fail.
-    """
-    from PIL import Image, ImageDraw
-
-    size = 512
-    img = Image.new("RGB", (size, size), (15, 25, 20))
-    draw = ImageDraw.Draw(img)
-
-    # Background gradient effect — concentric circles
+def _draw_background(draw: ImageDraw.ImageDraw, size: int) -> None:
+    """Draw radial gradient background with concentric circles."""
     for i in range(size // 2, 0, -4):
         g = int(25 + (i / (size // 2)) * 30)
         draw.ellipse(
@@ -291,33 +283,45 @@ def _generate_avatar_image() -> bytes:
             fill=(10, g, 20),
         )
 
-    # Wizard hat (triangle)
+
+def _draw_wizard(draw: ImageDraw.ImageDraw) -> None:
+    """Draw wizard hat, face, eyes, smile, monogram, and robe."""
     hat_color = (100, 50, 160)  # purple
-    draw.polygon(
-        [(256, 40), (160, 220), (352, 220)],
-        fill=hat_color,
-        outline=(180, 130, 255),
-    )
+    hat_outline = (180, 130, 255)
+    gold = (220, 190, 50)
+    pupil = (30, 30, 60)
 
-    # Hat brim
-    draw.ellipse([140, 200, 372, 250], fill=hat_color, outline=(180, 130, 255))
+    # Hat + brim
+    draw.polygon([(256, 40), (160, 220), (352, 220)], fill=hat_color, outline=hat_outline)
+    draw.ellipse([140, 200, 372, 250], fill=hat_color, outline=hat_outline)
 
-    # Face circle
+    # Face
     draw.ellipse([190, 220, 322, 370], fill=(60, 180, 100), outline=(80, 220, 120))
 
-    # Eyes
+    # Eyes (whites + pupils)
     draw.ellipse([220, 275, 248, 310], fill=(255, 255, 255))
     draw.ellipse([264, 275, 292, 310], fill=(255, 255, 255))
-    draw.ellipse([228, 285, 242, 300], fill=(30, 30, 60))
-    draw.ellipse([272, 285, 286, 300], fill=(30, 30, 60))
+    draw.ellipse([228, 285, 242, 300], fill=pupil)
+    draw.ellipse([272, 285, 286, 300], fill=pupil)
 
     # Smile
-    draw.arc([225, 300, 287, 355], start=10, end=170, fill=(30, 30, 60), width=3)
+    draw.arc([225, 300, 287, 355], start=10, end=170, fill=pupil, width=3)
 
-    # Stars around the hat
+    # "T" monogram on hat
+    draw.text((243, 100), "T", fill=gold)
+
+    # Robe
+    draw.polygon(
+        [(180, 370), (140, 500), (372, 500), (332, 370)],
+        fill=(40, 100, 70),
+        outline=(60, 160, 100),
+    )
+
+
+def _draw_stars(draw: ImageDraw.ImageDraw) -> None:
+    """Draw decorative gold stars around the wizard hat."""
     gold = (220, 190, 50)
-    star_positions = [(120, 100), (380, 120), (100, 300), (400, 280), (256, 10)]
-    for sx, sy in star_positions:
+    for sx, sy in [(120, 100), (380, 120), (100, 300), (400, 280), (256, 10)]:
         r = 8
         draw.polygon(
             [
@@ -333,18 +337,26 @@ def _generate_avatar_image() -> bytes:
             fill=gold,
         )
 
-    # "T" monogram on the hat
-    draw.text((243, 100), "T", fill=gold)
 
-    # Robe / body
-    draw.polygon(
-        [(180, 370), (140, 500), (372, 500), (332, 370)],
-        fill=(40, 100, 70),
-        outline=(60, 160, 100),
-    )
+def _generate_avatar_image() -> bytes:
+    """Generate a Timmy-themed avatar image using Pillow.
 
+    Creates a 512x512 wizard-themed avatar with emerald/purple/gold palette.
+    Returns raw PNG bytes. Falls back to a minimal solid-color image if
+    Pillow drawing primitives fail.
+    """
     import io
 
+    from PIL import Image, ImageDraw
+
+    size = 512
+    img = Image.new("RGB", (size, size), (15, 25, 20))
+    draw = ImageDraw.Draw(img)
+
+    _draw_background(draw, size)
+    _draw_wizard(draw)
+    _draw_stars(draw)
+
     buf = io.BytesIO()
     img.save(buf, format="PNG")
     return buf.getvalue()

src/timmy/memory/unified.py

@@ -78,83 +78,88 @@ def _migrate_schema(conn: sqlite3.Connection) -> None:
     cursor = conn.execute("SELECT name FROM sqlite_master WHERE type='table'")
     tables = {row[0] for row in cursor.fetchall()}
 
-    has_memories = "memories" in tables
-    has_episodes = "episodes" in tables
-    has_chunks = "chunks" in tables
-    has_facts = "facts" in tables
-
-    # Check if we need to migrate (old schema exists but new one doesn't fully)
-    if not has_memories:
+    if "memories" not in tables:
         logger.info("Migration: Creating unified memories table")
-        # Schema will be created above
-
-    # Migrate episodes -> memories
-    if has_episodes and has_memories:
-        logger.info("Migration: Converting episodes table to memories")
-        try:
-            cols = _get_table_columns(conn, "episodes")
-            context_type_col = "context_type" if "context_type" in cols else "'conversation'"
-
-            conn.execute(f"""
-                INSERT INTO memories (
-                    id, content, memory_type, source, embedding,
-                    metadata, agent_id, task_id, session_id,
-                    created_at, access_count, last_accessed
-                )
-                SELECT 
-                    id, content, 
-                    COALESCE({context_type_col}, 'conversation'),
-                    COALESCE(source, 'agent'),
-                    embedding,
-                    metadata, agent_id, task_id, session_id,
-                    COALESCE(timestamp, datetime('now')), 0, NULL
-                FROM episodes
-            """)
-            conn.execute("DROP TABLE episodes")
-            logger.info("Migration: Migrated episodes to memories")
-        except sqlite3.Error as exc:
-            logger.warning("Migration: Failed to migrate episodes: %s", exc)
-
-    # Migrate chunks -> memories as vault_chunk
-    if has_chunks and has_memories:
-        logger.info("Migration: Converting chunks table to memories")
-        try:
-            cols = _get_table_columns(conn, "chunks")
-
-            id_col = "id" if "id" in cols else "CAST(rowid AS TEXT)"
-            content_col = "content" if "content" in cols else "text"
-            source_col = (
-                "filepath" if "filepath" in cols else ("source" if "source" in cols else "'vault'")
-            )
-            embedding_col = "embedding" if "embedding" in cols else "NULL"
-            created_col = "created_at" if "created_at" in cols else "datetime('now')"
-
-            conn.execute(f"""
-                INSERT INTO memories (
-                    id, content, memory_type, source, embedding,
-                    created_at, access_count
-                )
-                SELECT 
-                    {id_col}, {content_col}, 'vault_chunk', {source_col},
-                    {embedding_col}, {created_col}, 0
-                FROM chunks
-            """)
-            conn.execute("DROP TABLE chunks")
-            logger.info("Migration: Migrated chunks to memories")
-        except sqlite3.Error as exc:
-            logger.warning("Migration: Failed to migrate chunks: %s", exc)
-
-    # Drop old facts table
-    if has_facts:
-        try:
-            conn.execute("DROP TABLE facts")
-            logger.info("Migration: Dropped old facts table")
-        except sqlite3.Error as exc:
-            logger.warning("Migration: Failed to drop facts: %s", exc)
+        # Schema will be created by _ensure_schema above
+        conn.commit()
+        return
 
+    _migrate_episodes(conn, tables)
+    _migrate_chunks(conn, tables)
+    _drop_legacy_tables(conn, tables)
     conn.commit()
 
 
+def _migrate_episodes(conn: sqlite3.Connection, tables: set[str]) -> None:
+    """Migrate episodes table rows into the unified memories table."""
+    if "episodes" not in tables:
+        return
+    logger.info("Migration: Converting episodes table to memories")
+    try:
+        cols = _get_table_columns(conn, "episodes")
+        context_type_col = "context_type" if "context_type" in cols else "'conversation'"
+        conn.execute(f"""
+            INSERT INTO memories (
+                id, content, memory_type, source, embedding,
+                metadata, agent_id, task_id, session_id,
+                created_at, access_count, last_accessed
+            )
+            SELECT
+                id, content,
+                COALESCE({context_type_col}, 'conversation'),
+                COALESCE(source, 'agent'),
+                embedding,
+                metadata, agent_id, task_id, session_id,
+                COALESCE(timestamp, datetime('now')), 0, NULL
+            FROM episodes
+        """)
+        conn.execute("DROP TABLE episodes")
+        logger.info("Migration: Migrated episodes to memories")
+    except sqlite3.Error as exc:
+        logger.warning("Migration: Failed to migrate episodes: %s", exc)
+
+
+def _migrate_chunks(conn: sqlite3.Connection, tables: set[str]) -> None:
+    """Migrate chunks table rows into the unified memories table as vault_chunk."""
+    if "chunks" not in tables:
+        return
+    logger.info("Migration: Converting chunks table to memories")
+    try:
+        cols = _get_table_columns(conn, "chunks")
+        id_col = "id" if "id" in cols else "CAST(rowid AS TEXT)"
+        content_col = "content" if "content" in cols else "text"
+        source_col = (
+            "filepath" if "filepath" in cols else ("source" if "source" in cols else "'vault'")
+        )
+        embedding_col = "embedding" if "embedding" in cols else "NULL"
+        created_col = "created_at" if "created_at" in cols else "datetime('now')"
+        conn.execute(f"""
+            INSERT INTO memories (
+                id, content, memory_type, source, embedding,
+                created_at, access_count
+            )
+            SELECT
+                {id_col}, {content_col}, 'vault_chunk', {source_col},
+                {embedding_col}, {created_col}, 0
+            FROM chunks
+        """)
+        conn.execute("DROP TABLE chunks")
+        logger.info("Migration: Migrated chunks to memories")
+    except sqlite3.Error as exc:
+        logger.warning("Migration: Failed to migrate chunks: %s", exc)
+
+
+def _drop_legacy_tables(conn: sqlite3.Connection, tables: set[str]) -> None:
+    """Drop old facts table if it exists."""
+    if "facts" not in tables:
+        return
+    try:
+        conn.execute("DROP TABLE facts")
+        logger.info("Migration: Dropped old facts table")
+    except sqlite3.Error as exc:
+        logger.warning("Migration: Failed to drop facts: %s", exc)
+
+
 def _get_table_columns(conn: sqlite3.Connection, table_name: str) -> set[str]:
     """Get the column names for a table."""
     cursor = conn.execute(f"PRAGMA table_info({table_name})")

src/timmy/thinking.py

@@ -341,6 +341,11 @@ class ThinkingEngine:
             )
             return None
 
+        # Capture arrival time *before* the LLM call so the thought
+        # timestamp reflects when the cycle started, not when the
+        # (potentially slow) generation finished.  Fixes #582.
+        arrived_at = datetime.now(UTC).isoformat()
+
         memory_context, system_context, recent_thoughts = self._build_thinking_context()
 
         content, seed_type = await self._generate_novel_thought(
@@ -352,7 +357,7 @@ class ThinkingEngine:
         if not content:
             return None
 
-        thought = self._store_thought(content, seed_type)
+        thought = self._store_thought(content, seed_type, arrived_at=arrived_at)
         self._last_thought_id = thought.id
 
         await self._process_thinking_result(thought)
@@ -1173,14 +1178,25 @@ class ThinkingEngine:
         raw = run.content if hasattr(run, "content") else str(run)
         return _THINK_TAG_RE.sub("", raw) if raw else raw
 
-    def _store_thought(self, content: str, seed_type: str) -> Thought:
-        """Persist a thought to SQLite."""
+    def _store_thought(
+        self,
+        content: str,
+        seed_type: str,
+        *,
+        arrived_at: str | None = None,
+    ) -> Thought:
+        """Persist a thought to SQLite.
+
+        Args:
+            arrived_at: ISO-8601 timestamp captured when the thinking cycle
+                started.  Falls back to now() for callers that don't supply it.
+        """
         thought = Thought(
             id=str(uuid.uuid4()),
             content=content,
             seed_type=seed_type,
             parent_id=self._last_thought_id,
-            created_at=datetime.now(UTC).isoformat(),
+            created_at=arrived_at or datetime.now(UTC).isoformat(),
         )
 
         with _get_conn(self._db_path) as conn:
@@ -1261,6 +1277,53 @@ class ThinkingEngine:
             logger.debug("Failed to broadcast thought: %s", exc)
 
 
+def _query_thoughts(
+    db_path: Path, query: str, seed_type: str | None, limit: int
+) -> list[sqlite3.Row]:
+    """Run the thought-search SQL and return matching rows."""
+    pattern = f"%{query}%"
+    with _get_conn(db_path) as conn:
+        if seed_type:
+            return conn.execute(
+                """
+                SELECT id, content, seed_type, created_at
+                FROM thoughts
+                WHERE content LIKE ? AND seed_type = ?
+                ORDER BY created_at DESC
+                LIMIT ?
+                """,
+                (pattern, seed_type, limit),
+            ).fetchall()
+        return conn.execute(
+            """
+            SELECT id, content, seed_type, created_at
+            FROM thoughts
+            WHERE content LIKE ?
+            ORDER BY created_at DESC
+            LIMIT ?
+            """,
+            (pattern, limit),
+        ).fetchall()
+
+
+def _format_thought_rows(rows: list[sqlite3.Row], query: str, seed_type: str | None) -> str:
+    """Format thought rows into a human-readable string."""
+    lines = [f'Found {len(rows)} thought(s) matching "{query}":']
+    if seed_type:
+        lines[0] += f' [seed_type="{seed_type}"]'
+    lines.append("")
+
+    for row in rows:
+        ts = datetime.fromisoformat(row["created_at"])
+        local_ts = ts.astimezone()
+        time_str = local_ts.strftime("%Y-%m-%d %I:%M %p").lstrip("0")
+        seed = row["seed_type"]
+        content = row["content"].replace("\n", " ")  # Flatten newlines for display
+        lines.append(f"[{time_str}] ({seed}) {content[:150]}")
+
+    return "\n".join(lines)
+
+
 def search_thoughts(query: str, seed_type: str | None = None, limit: int = 10) -> str:
     """Search Timmy's thought history for reflections matching a query.
 
@@ -1278,58 +1341,17 @@ def search_thoughts(query: str, seed_type: str | None = None, limit: int = 10) -
         Formatted string with matching thoughts, newest first, including
         timestamps and seed types. Returns a helpful message if no matches found.
     """
-    # Clamp limit to reasonable bounds
     limit = max(1, min(limit, 50))
 
     try:
-        engine = thinking_engine
-        db_path = engine._db_path
-
-        # Build query with optional seed_type filter
-        with _get_conn(db_path) as conn:
-            if seed_type:
-                rows = conn.execute(
-                    """
-                    SELECT id, content, seed_type, created_at
-                    FROM thoughts
-                    WHERE content LIKE ? AND seed_type = ?
-                    ORDER BY created_at DESC
-                    LIMIT ?
-                    """,
-                    (f"%{query}%", seed_type, limit),
-                ).fetchall()
-            else:
-                rows = conn.execute(
-                    """
-                    SELECT id, content, seed_type, created_at
-                    FROM thoughts
-                    WHERE content LIKE ?
-                    ORDER BY created_at DESC
-                    LIMIT ?
-                    """,
-                    (f"%{query}%", limit),
-                ).fetchall()
+        rows = _query_thoughts(thinking_engine._db_path, query, seed_type, limit)
 
         if not rows:
             if seed_type:
                 return f'No thoughts found matching "{query}" with seed_type="{seed_type}".'
             return f'No thoughts found matching "{query}".'
 
-        # Format results
-        lines = [f'Found {len(rows)} thought(s) matching "{query}":']
-        if seed_type:
-            lines[0] += f' [seed_type="{seed_type}"]'
-        lines.append("")
-
-        for row in rows:
-            ts = datetime.fromisoformat(row["created_at"])
-            local_ts = ts.astimezone()
-            time_str = local_ts.strftime("%Y-%m-%d %I:%M %p").lstrip("0")
-            seed = row["seed_type"]
-            content = row["content"].replace("\n", " ")  # Flatten newlines for display
-            lines.append(f"[{time_str}] ({seed}) {content[:150]}")
-
-        return "\n".join(lines)
+        return _format_thought_rows(rows, query, seed_type)
 
     except Exception as exc:
         logger.warning("Thought search failed: %s", exc)

src/timmy/tools_intro/__init__.py

@@ -326,6 +326,46 @@ def get_live_system_status() -> dict[str, Any]:
     return result
 
 
+def _build_pytest_cmd(venv_python: Path, scope: str) -> list[str]:
+    """Build the pytest command list for the given scope."""
+    cmd = [str(venv_python), "-m", "pytest", "-x", "-q", "--tb=short", "--timeout=30"]
+
+    if scope == "fast":
+        cmd.extend(
+            [
+                "--ignore=tests/functional",
+                "--ignore=tests/e2e",
+                "--ignore=tests/integrations",
+                "tests/",
+            ]
+        )
+    elif scope == "full":
+        cmd.append("tests/")
+    else:
+        cmd.append(scope)
+
+    return cmd
+
+
+def _parse_pytest_output(output: str) -> dict[str, int]:
+    """Extract passed/failed/error counts from pytest output."""
+    import re
+
+    passed = failed = errors = 0
+    for line in output.splitlines():
+        if "passed" in line or "failed" in line or "error" in line:
+            nums = re.findall(r"(\d+) (passed|failed|error)", line)
+            for count, kind in nums:
+                if kind == "passed":
+                    passed = int(count)
+                elif kind == "failed":
+                    failed = int(count)
+                elif kind == "error":
+                    errors = int(count)
+
+    return {"passed": passed, "failed": failed, "errors": errors}
+
+
 def run_self_tests(scope: str = "fast", _repo_root: str | None = None) -> dict[str, Any]:
     """Run Timmy's own test suite and report results.
 
@@ -349,49 +389,17 @@ def run_self_tests(scope: str = "fast", _repo_root: str | None = None) -> dict[s
     if not venv_python.exists():
         return {"success": False, "error": f"No venv found at {venv_python}"}
 
-    cmd = [str(venv_python), "-m", "pytest", "-x", "-q", "--tb=short", "--timeout=30"]
-
-    if scope == "fast":
-        # Unit tests only — skip functional/e2e/integration
-        cmd.extend(
-            [
-                "--ignore=tests/functional",
-                "--ignore=tests/e2e",
-                "--ignore=tests/integrations",
-                "tests/",
-            ]
-        )
-    elif scope == "full":
-        cmd.append("tests/")
-    else:
-        # Specific path
-        cmd.append(scope)
+    cmd = _build_pytest_cmd(venv_python, scope)
 
     try:
         result = subprocess.run(cmd, capture_output=True, text=True, timeout=120, cwd=repo)
         output = result.stdout + result.stderr
-
-        # Parse pytest output for counts
-        passed = failed = errors = 0
-        for line in output.splitlines():
-            if "passed" in line or "failed" in line or "error" in line:
-                import re
-
-                nums = re.findall(r"(\d+) (passed|failed|error)", line)
-                for count, kind in nums:
-                    if kind == "passed":
-                        passed = int(count)
-                    elif kind == "failed":
-                        failed = int(count)
-                    elif kind == "error":
-                        errors = int(count)
+        counts = _parse_pytest_output(output)
 
         return {
             "success": result.returncode == 0,
-            "passed": passed,
-            "failed": failed,
-            "errors": errors,
-            "total": passed + failed + errors,
+            **counts,
+            "total": counts["passed"] + counts["failed"] + counts["errors"],
             "return_code": result.returncode,
             "summary": output[-2000:] if len(output) > 2000 else output,
         }

src/timmy/voice_loop.py

@@ -78,6 +78,11 @@ DEFAULT_MAX_UTTERANCE = 30.0  # safety cap — don't record forever
 DEFAULT_SESSION_ID = "voice"
 
 
+def _rms(block: np.ndarray) -> float:
+    """Compute root-mean-square energy of an audio block."""
+    return float(np.sqrt(np.mean(block.astype(np.float32) ** 2)))
+
+
 @dataclass
 class VoiceConfig:
     """Configuration for the voice loop."""
@@ -161,13 +166,6 @@ class VoiceLoop:
         min_blocks = int(self.config.min_utterance / 0.1)
         max_blocks = int(self.config.max_utterance / 0.1)
 
-        audio_chunks: list[np.ndarray] = []
-        silent_count = 0
-        recording = False
-
-        def _rms(block: np.ndarray) -> float:
-            return float(np.sqrt(np.mean(block.astype(np.float32) ** 2)))
-
         sys.stdout.write("\n  🎤 Listening... (speak now)\n")
         sys.stdout.flush()
 
@@ -177,42 +175,69 @@ class VoiceLoop:
             dtype="float32",
             blocksize=block_size,
         ) as stream:
-            while self._running:
-                block, overflowed = stream.read(block_size)
-                if overflowed:
-                    logger.debug("Audio buffer overflowed")
+            chunks = self._capture_audio_blocks(stream, block_size, silence_blocks, max_blocks)
 
-                rms = _rms(block)
+        return self._finalize_utterance(chunks, min_blocks, sr)
 
-                if not recording:
-                    if rms > self.config.silence_threshold:
-                        recording = True
-                        silent_count = 0
-                        audio_chunks.append(block.copy())
-                        sys.stdout.write("  📢 Recording...\r")
-                        sys.stdout.flush()
+    def _capture_audio_blocks(
+        self,
+        stream,
+        block_size: int,
+        silence_blocks: int,
+        max_blocks: int,
+    ) -> list[np.ndarray]:
+        """Read audio blocks from *stream* until silence or max length.
+
+        Returns the list of captured audio chunks (may be empty).
+        """
+        chunks: list[np.ndarray] = []
+        silent_count = 0
+        recording = False
+
+        while self._running:
+            block, overflowed = stream.read(block_size)
+            if overflowed:
+                logger.debug("Audio buffer overflowed")
+
+            rms = _rms(block)
+
+            if not recording:
+                if rms > self.config.silence_threshold:
+                    recording = True
+                    silent_count = 0
+                    chunks.append(block.copy())
+                    sys.stdout.write("  📢 Recording...\r")
+                    sys.stdout.flush()
+            else:
+                chunks.append(block.copy())
+
+                if rms < self.config.silence_threshold:
+                    silent_count += 1
                 else:
-                    audio_chunks.append(block.copy())
+                    silent_count = 0
 
-                    if rms < self.config.silence_threshold:
-                        silent_count += 1
-                    else:
-                        silent_count = 0
+                if silent_count >= silence_blocks:
+                    break
 
-                    # End of utterance
-                    if silent_count >= silence_blocks:
-                        break
+                if len(chunks) >= max_blocks:
+                    logger.info("Max utterance length reached, stopping.")
+                    break
 
-                    # Safety cap
-                    if len(audio_chunks) >= max_blocks:
-                        logger.info("Max utterance length reached, stopping.")
-                        break
+        return chunks
 
-        if not audio_chunks or len(audio_chunks) < min_blocks:
+    @staticmethod
+    def _finalize_utterance(
+        chunks: list[np.ndarray], min_blocks: int, sample_rate: int
+    ) -> np.ndarray | None:
+        """Concatenate recorded chunks and report duration.
+
+        Returns ``None`` if the utterance is too short to be meaningful.
+        """
+        if not chunks or len(chunks) < min_blocks:
             return None
 
-        audio = np.concatenate(audio_chunks, axis=0).flatten()
-        duration = len(audio) / sr
+        audio = np.concatenate(chunks, axis=0).flatten()
+        duration = len(audio) / sample_rate
         sys.stdout.write(f"  ✂️  Captured {duration:.1f}s of audio\n")
         sys.stdout.flush()
         return audio

static/css/mission-control.css

@@ -2493,3 +2493,57 @@
 .db-cell { max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .db-cell:hover { white-space: normal; word-break: break-all; }
 .db-truncated { font-size: 0.7rem; color: var(--amber); padding: 0.3rem 0; }
+
+/* ── Tower ────────────────────────────────────────────────────────────── */
+.tower-container { max-width: 1400px; margin: 0 auto; }
+.tower-header { margin-bottom: 1rem; }
+.tower-title { font-size: 1.6rem; font-weight: 700; color: var(--green); letter-spacing: 0.15em; }
+.tower-subtitle { font-size: 0.85rem; color: var(--text-dim); }
+
+.tower-conn-badge { font-size: 0.7rem; font-weight: 600; padding: 2px 8px; border-radius: 3px; letter-spacing: 0.08em; }
+.tower-conn-live { color: var(--green); border: 1px solid var(--green); }
+.tower-conn-offline { color: var(--red); border: 1px solid var(--red); }
+.tower-conn-connecting { color: var(--amber); border: 1px solid var(--amber); }
+
+.tower-phase-card { min-height: 300px; }
+.tower-phase-thinking { border-left: 3px solid var(--purple); }
+.tower-phase-predicting { border-left: 3px solid var(--orange); }
+.tower-phase-advising { border-left: 3px solid var(--green); }
+.tower-scroll { max-height: 50vh; overflow-y: auto; }
+.tower-empty { text-align: center; color: var(--text-dim); padding: 16px; font-size: 0.85rem; }
+
+.tower-stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; text-align: center; }
+.tower-stat-label { display: block; font-size: 0.65rem; color: var(--text-dim); letter-spacing: 0.1em; }
+.tower-stat-value { display: block; font-size: 1.1rem; font-weight: 700; color: var(--text-bright); }
+
+.tower-event { padding: 8px; margin-bottom: 6px; border-left: 3px solid var(--border); border-radius: 3px; background: var(--bg-card); }
+.tower-etype-task_posted { border-left-color: var(--purple); }
+.tower-etype-bid_submitted { border-left-color: var(--orange); }
+.tower-etype-task_completed { border-left-color: var(--green); }
+.tower-etype-task_failed { border-left-color: var(--red); }
+.tower-etype-agent_joined { border-left-color: var(--purple); }
+.tower-etype-tool_executed { border-left-color: var(--amber); }
+.tower-ev-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
+.tower-ev-badge { font-size: 0.65rem; font-weight: 600; color: var(--text-bright); letter-spacing: 0.08em; }
+.tower-ev-dots { font-size: 0.6rem; color: var(--amber); }
+.tower-ev-desc { font-size: 0.8rem; color: var(--text); }
+.tower-ev-time { font-size: 0.65rem; color: var(--text-dim); margin-top: 2px; }
+
+.tower-pred { padding: 8px; margin-bottom: 6px; border-radius: 3px; background: var(--bg-card); border-left: 3px solid var(--orange); }
+.tower-pred-done { border-left-color: var(--green); }
+.tower-pred-pending { border-left-color: var(--amber); }
+.tower-pred-head { display: flex; justify-content: space-between; align-items: center; }
+.tower-pred-task { font-size: 0.75rem; font-weight: 600; color: var(--text-bright); font-family: monospace; }
+.tower-pred-acc { font-size: 0.75rem; font-weight: 700; }
+.tower-pred-detail { font-size: 0.75rem; color: var(--text-dim); margin-top: 4px; }
+
+.tower-advisory { padding: 8px; margin-bottom: 6px; border-radius: 3px; background: var(--bg-card); border-left: 3px solid var(--border); }
+.tower-adv-high { border-left-color: var(--red); }
+.tower-adv-medium { border-left-color: var(--orange); }
+.tower-adv-low { border-left-color: var(--green); }
+.tower-adv-head { display: flex; justify-content: space-between; font-size: 0.65rem; margin-bottom: 4px; }
+.tower-adv-cat { font-weight: 600; color: var(--text-dim); letter-spacing: 0.08em; }
+.tower-adv-prio { font-weight: 700; color: var(--amber); }
+.tower-adv-title { font-size: 0.85rem; font-weight: 600; color: var(--text-bright); }
+.tower-adv-detail { font-size: 0.8rem; color: var(--text); margin-top: 2px; }
+.tower-adv-action { font-size: 0.75rem; color: var(--green); margin-top: 4px; font-style: italic; }

tests/infrastructure/test_router_history.py

@@ -0,0 +1,149 @@
+"""Tests for provider health history store and API endpoint."""
+
+import time
+from datetime import UTC, datetime, timedelta
+from unittest.mock import MagicMock
+
+import pytest
+from src.infrastructure.router.history import HealthHistoryStore
+
+
+@pytest.fixture
+def store():
+    """In-memory history store for testing."""
+    s = HealthHistoryStore(db_path=":memory:")
+    yield s
+    s.close()
+
+
+@pytest.fixture
+def sample_providers():
+    return [
+        {
+            "name": "anthropic",
+            "status": "healthy",
+            "error_rate": 0.01,
+            "avg_latency_ms": 250.5,
+            "circuit_state": "closed",
+            "total_requests": 100,
+        },
+        {
+            "name": "local",
+            "status": "degraded",
+            "error_rate": 0.15,
+            "avg_latency_ms": 80.0,
+            "circuit_state": "closed",
+            "total_requests": 50,
+        },
+    ]
+
+
+def test_record_and_retrieve(store, sample_providers):
+    store.record_snapshot(sample_providers)
+    history = store.get_history(hours=1)
+    assert len(history) == 1
+    assert len(history[0]["providers"]) == 2
+    assert history[0]["providers"][0]["name"] == "anthropic"
+    assert history[0]["providers"][1]["name"] == "local"
+    assert "timestamp" in history[0]
+
+
+def test_multiple_snapshots(store, sample_providers):
+    store.record_snapshot(sample_providers)
+    time.sleep(0.01)
+    store.record_snapshot(sample_providers)
+    history = store.get_history(hours=1)
+    assert len(history) == 2
+
+
+def test_hours_filtering(store, sample_providers):
+    old_ts = (datetime.now(UTC) - timedelta(hours=48)).isoformat()
+    store._conn.execute(
+        """INSERT INTO snapshots
+           (timestamp, provider_name, status, error_rate,
+            avg_latency_ms, circuit_state, total_requests)
+           VALUES (?, ?, ?, ?, ?, ?, ?)""",
+        (old_ts, "anthropic", "healthy", 0.0, 100.0, "closed", 10),
+    )
+    store._conn.commit()
+    store.record_snapshot(sample_providers)
+
+    history = store.get_history(hours=24)
+    assert len(history) == 1
+
+    history = store.get_history(hours=72)
+    assert len(history) == 2
+
+
+def test_prune(store, sample_providers):
+    old_ts = (datetime.now(UTC) - timedelta(hours=200)).isoformat()
+    store._conn.execute(
+        """INSERT INTO snapshots
+           (timestamp, provider_name, status, error_rate,
+            avg_latency_ms, circuit_state, total_requests)
+           VALUES (?, ?, ?, ?, ?, ?, ?)""",
+        (old_ts, "anthropic", "healthy", 0.0, 100.0, "closed", 10),
+    )
+    store._conn.commit()
+    store.record_snapshot(sample_providers)
+
+    deleted = store.prune(keep_hours=168)
+    assert deleted == 1
+    history = store.get_history(hours=999)
+    assert len(history) == 1
+
+
+def test_empty_history(store):
+    assert store.get_history(hours=24) == []
+
+
+def test_capture_snapshot_from_router(store):
+    mock_metrics = MagicMock()
+    mock_metrics.error_rate = 0.05
+    mock_metrics.avg_latency_ms = 200.0
+    mock_metrics.total_requests = 42
+
+    mock_provider = MagicMock()
+    mock_provider.name = "test-provider"
+    mock_provider.status.value = "healthy"
+    mock_provider.metrics = mock_metrics
+    mock_provider.circuit_state.value = "closed"
+
+    mock_router = MagicMock()
+    mock_router.providers = [mock_provider]
+
+    store._capture_snapshot(mock_router)
+    history = store.get_history(hours=1)
+    assert len(history) == 1
+    p = history[0]["providers"][0]
+    assert p["name"] == "test-provider"
+    assert p["status"] == "healthy"
+    assert p["error_rate"] == 0.05
+    assert p["total_requests"] == 42
+
+
+def test_history_api_endpoint(store, sample_providers):
+    """GET /api/v1/router/history returns snapshot data."""
+    store.record_snapshot(sample_providers)
+
+    from fastapi import FastAPI
+    from fastapi.testclient import TestClient
+    from src.infrastructure.router.api import get_cascade_router
+    from src.infrastructure.router.api import router as api_router
+    from src.infrastructure.router.history import get_history_store
+
+    app = FastAPI()
+    app.include_router(api_router)
+
+    app.dependency_overrides[get_history_store] = lambda: store
+    app.dependency_overrides[get_cascade_router] = lambda: MagicMock()
+
+    client = TestClient(app)
+    resp = client.get("/api/v1/router/history?hours=1")
+    assert resp.status_code == 200
+    data = resp.json()
+    assert len(data) == 1
+    assert len(data[0]["providers"]) == 2
+    assert data[0]["providers"][0]["name"] == "anthropic"
+
+    app.dependency_overrides.clear()

tests/integrations/test_discord_vendor.py

@@ -174,6 +174,103 @@ class TestDiscordVendor:
         assert result is False
 
 
+class TestExtractContent:
+    def test_strips_bot_mention(self):
+        from integrations.chat_bridge.vendors.discord import DiscordVendor
+
+        vendor = DiscordVendor()
+        vendor._client = MagicMock()
+        vendor._client.user.id = 12345
+        msg = MagicMock()
+        msg.content = "<@12345> hello there"
+        assert vendor._extract_content(msg) == "hello there"
+
+    def test_no_client_user(self):
+        from integrations.chat_bridge.vendors.discord import DiscordVendor
+
+        vendor = DiscordVendor()
+        vendor._client = MagicMock()
+        vendor._client.user = None
+        msg = MagicMock()
+        msg.content = "hello"
+        assert vendor._extract_content(msg) == "hello"
+
+    def test_empty_after_strip(self):
+        from integrations.chat_bridge.vendors.discord import DiscordVendor
+
+        vendor = DiscordVendor()
+        vendor._client = MagicMock()
+        vendor._client.user.id = 99
+        msg = MagicMock()
+        msg.content = "<@99>"
+        assert vendor._extract_content(msg) == ""
+
+
+class TestInvokeAgent:
+    @staticmethod
+    def _make_typing_target():
+        """Build a mock target whose .typing() is an async context manager."""
+        from contextlib import asynccontextmanager
+
+        target = AsyncMock()
+
+        @asynccontextmanager
+        async def _typing():
+            yield
+
+        target.typing = _typing
+        return target
+
+    @pytest.mark.asyncio
+    async def test_timeout_returns_error(self):
+        from integrations.chat_bridge.vendors.discord import DiscordVendor
+
+        vendor = DiscordVendor()
+        target = self._make_typing_target()
+
+        with patch(
+            "integrations.chat_bridge.vendors.discord.chat_with_tools", side_effect=TimeoutError
+        ):
+            run_output, response = await vendor._invoke_agent("hi", "sess", target)
+        assert run_output is None
+        assert "too long" in response
+
+    @pytest.mark.asyncio
+    async def test_exception_returns_error(self):
+        from integrations.chat_bridge.vendors.discord import DiscordVendor
+
+        vendor = DiscordVendor()
+        target = self._make_typing_target()
+
+        with patch(
+            "integrations.chat_bridge.vendors.discord.chat_with_tools",
+            side_effect=RuntimeError("boom"),
+        ):
+            run_output, response = await vendor._invoke_agent("hi", "sess", target)
+        assert run_output is None
+        assert "trouble" in response
+
+
+class TestSendResponse:
+    @pytest.mark.asyncio
+    async def test_skips_empty(self):
+        from integrations.chat_bridge.vendors.discord import DiscordVendor
+
+        target = AsyncMock()
+        await DiscordVendor._send_response(None, target)
+        target.send.assert_not_called()
+        await DiscordVendor._send_response("", target)
+        target.send.assert_not_called()
+
+    @pytest.mark.asyncio
+    async def test_sends_short_message(self):
+        from integrations.chat_bridge.vendors.discord import DiscordVendor
+
+        target = AsyncMock()
+        await DiscordVendor._send_response("hello", target)
+        target.send.assert_called_once_with("hello")
+
+
 class TestChunkMessage:
     def test_short_message(self):
         from integrations.chat_bridge.vendors.discord import _chunk_message

tests/timmy/test_agents_base.py

@@ -361,6 +361,53 @@ class TestRun:
         assert response == "ok"
 
 
+# ── _handle_retry_or_raise ────────────────────────────────────────────────
+
+
+class TestHandleRetryOrRaise:
+    def test_raises_on_last_attempt(self):
+        BaseAgent = _make_base_class()
+        with pytest.raises(ValueError, match="boom"):
+            BaseAgent._handle_retry_or_raise(
+                ValueError("boom"),
+                attempt=3,
+                max_retries=3,
+                transient=False,
+            )
+
+    def test_raises_on_last_attempt_transient(self):
+        BaseAgent = _make_base_class()
+        exc = httpx.ConnectError("down")
+        with pytest.raises(httpx.ConnectError):
+            BaseAgent._handle_retry_or_raise(
+                exc,
+                attempt=3,
+                max_retries=3,
+                transient=True,
+            )
+
+    def test_no_raise_on_early_attempt(self):
+        BaseAgent = _make_base_class()
+        # Should return None (no raise) on non-final attempt
+        result = BaseAgent._handle_retry_or_raise(
+            ValueError("retry me"),
+            attempt=1,
+            max_retries=3,
+            transient=False,
+        )
+        assert result is None
+
+    def test_no_raise_on_early_transient(self):
+        BaseAgent = _make_base_class()
+        result = BaseAgent._handle_retry_or_raise(
+            httpx.ReadTimeout("busy"),
+            attempt=2,
+            max_retries=3,
+            transient=True,
+        )
+        assert result is None
+
+
 # ── get_capabilities / get_status ────────────────────────────────────────────
 
 

tests/timmy/test_cli.py

@@ -55,14 +55,14 @@ def test_think_sends_topic_to_agent():
     )
 
 
-def test_think_passes_model_size_option():
-    """think --model-size 70b must forward the model size to create_timmy."""
+def test_think_ignores_model_size_option():
+    """think --model-size 70b must not forward model_size to create_timmy."""
     mock_timmy = MagicMock()
 
     with patch("timmy.cli.create_timmy", return_value=mock_timmy) as mock_create:
         runner.invoke(app, ["think", "topic", "--model-size", "70b"])
 
-    mock_create.assert_called_once_with(backend=None, model_size="70b", session_id="cli")
+    mock_create.assert_called_once_with(backend=None, session_id="cli")
 
 
 # ---------------------------------------------------------------------------

tests/timmy/test_voice_loop.py

@@ -15,7 +15,7 @@ except ImportError:
     np = None
 
 try:
-    from timmy.voice_loop import VoiceConfig, VoiceLoop, _strip_markdown
+    from timmy.voice_loop import VoiceConfig, VoiceLoop, _rms, _strip_markdown
 except ImportError:
     pass  # pytestmark will skip all tests anyway
 
@@ -147,6 +147,31 @@ class TestStripMarkdown:
         assert "*" not in result
 
 
+class TestRms:
+    def test_silent_block(self):
+        block = np.zeros(1600, dtype=np.float32)
+        assert _rms(block) == pytest.approx(0.0, abs=1e-7)
+
+    def test_loud_block(self):
+        block = np.ones(1600, dtype=np.float32)
+        assert _rms(block) == pytest.approx(1.0, abs=1e-5)
+
+
+class TestFinalizeUtterance:
+    def test_returns_none_for_empty(self):
+        assert VoiceLoop._finalize_utterance([], min_blocks=5, sample_rate=16000) is None
+
+    def test_returns_none_for_too_short(self):
+        chunks = [np.zeros(1600, dtype=np.float32) for _ in range(3)]
+        assert VoiceLoop._finalize_utterance(chunks, min_blocks=5, sample_rate=16000) is None
+
+    def test_returns_audio_for_sufficient_chunks(self):
+        chunks = [np.ones(1600, dtype=np.float32) for _ in range(6)]
+        result = VoiceLoop._finalize_utterance(chunks, min_blocks=5, sample_rate=16000)
+        assert result is not None
+        assert len(result) == 6 * 1600
+
+
 class TestThink:
     def test_think_returns_response(self):
         loop = VoiceLoop()

tests/unit/test_lightning.py

@@ -0,0 +1,109 @@
+"""Unit tests for the lightning package (factory + ledger)."""
+
+from __future__ import annotations
+
+import pytest
+
+from lightning.factory import Invoice, MockBackend, get_backend
+from lightning.ledger import (
+    TxStatus,
+    TxType,
+    clear,
+    create_invoice_entry,
+    get_balance,
+    get_transactions,
+    mark_settled,
+)
+
+
+@pytest.fixture(autouse=True)
+def _clean_ledger():
+    """Reset the in-memory ledger between tests."""
+    clear()
+    yield
+    clear()
+
+
+# ── Factory tests ────────────────────────────────────────────────────
+
+
+class TestMockBackend:
+    def test_create_invoice_returns_invoice(self):
+        backend = MockBackend()
+        inv = backend.create_invoice(100, "test memo")
+        assert isinstance(inv, Invoice)
+        assert inv.amount_sats == 100
+        assert inv.memo == "test memo"
+        assert len(inv.payment_hash) == 64  # SHA-256 hex
+        assert inv.payment_request.startswith("lnbc")
+
+    def test_invoices_have_unique_hashes(self):
+        backend = MockBackend()
+        a = backend.create_invoice(10)
+        b = backend.create_invoice(10)
+        assert a.payment_hash != b.payment_hash
+
+
+class TestGetBackend:
+    def test_returns_mock_backend(self):
+        backend = get_backend()
+        assert isinstance(backend, MockBackend)
+
+
+# ── Ledger tests ─────────────────────────────────────────────────────
+
+
+class TestLedger:
+    def test_create_invoice_entry(self):
+        entry = create_invoice_entry(
+            payment_hash="abc123",
+            amount_sats=500,
+            memo="test",
+            source="unit_test",
+        )
+        assert entry.tx_type == TxType.incoming
+        assert entry.status == TxStatus.pending
+        assert entry.amount_sats == 500
+
+    def test_mark_settled(self):
+        create_invoice_entry(payment_hash="hash1", amount_sats=100)
+        result = mark_settled("hash1", preimage="secret")
+        assert result is not None
+        assert result.status == TxStatus.settled
+        assert result.preimage == "secret"
+        assert result.settled_at != ""
+
+    def test_mark_settled_unknown_hash(self):
+        assert mark_settled("nonexistent") is None
+
+    def test_get_balance_empty(self):
+        bal = get_balance()
+        assert bal["net_sats"] == 0
+        assert bal["available_sats"] == 0
+
+    def test_get_balance_with_settled(self):
+        create_invoice_entry(payment_hash="h1", amount_sats=1000)
+        mark_settled("h1")
+        bal = get_balance()
+        assert bal["incoming_total_sats"] == 1000
+        assert bal["net_sats"] == 1000
+        assert bal["available_sats"] == 1000
+
+    def test_get_balance_pending_not_counted(self):
+        create_invoice_entry(payment_hash="h2", amount_sats=500)
+        bal = get_balance()
+        assert bal["incoming_total_sats"] == 0
+        assert bal["pending_incoming_sats"] == 500
+
+    def test_get_transactions_returns_entries(self):
+        create_invoice_entry(payment_hash="t1", amount_sats=10)
+        create_invoice_entry(payment_hash="t2", amount_sats=20)
+        txs = get_transactions()
+        assert len(txs) == 2
+
+    def test_get_transactions_filter_by_status(self):
+        create_invoice_entry(payment_hash="f1", amount_sats=10)
+        create_invoice_entry(payment_hash="f2", amount_sats=20)
+        mark_settled("f1")
+        assert len(get_transactions(status="settled")) == 1
+        assert len(get_transactions(status="pending")) == 1