diff --git a/src/dashboard/app.py b/src/dashboard/app.py
index 8dddeb39..c6ff8c63 100644
--- a/src/dashboard/app.py
+++ b/src/dashboard/app.py
@@ -549,12 +549,28 @@ async def lifespan(app: FastAPI):
     except Exception:
         logger.debug("Failed to register error recorder")
 
+    # Mark session start for sovereignty duration tracking
+    try:
+        from timmy.sovereignty import mark_session_start
+
+        mark_session_start()
+    except Exception:
+        logger.debug("Failed to mark sovereignty session start")
+
     logger.info("✓ Dashboard ready for requests")
 
     yield
 
     await _shutdown_cleanup(bg_tasks, workshop_heartbeat)
 
+    # Generate and commit sovereignty session report
+    try:
+        from timmy.sovereignty import generate_and_commit_report
+
+        await generate_and_commit_report()
+    except Exception as exc:
+        logger.warning("Sovereignty report generation failed at shutdown: %s", exc)
+
 
 app = FastAPI(
     title="Mission Control",
diff --git a/src/timmy/sovereignty/__init__.py b/src/timmy/sovereignty/__init__.py
index 44ca4a45..4fae61db 100644
--- a/src/timmy/sovereignty/__init__.py
+++ b/src/timmy/sovereignty/__init__.py
@@ -4,4 +4,23 @@ Tracks how much of each AI layer (perception, decision, narration)
 runs locally vs. calls out to an LLM.  Feeds the sovereignty dashboard.
 
 Refs: #954, #953
+
+Session reporting: auto-generates markdown scorecards at session end
+and commits them to the Gitea repo for institutional memory.
+
+Refs: #957 (Session Sovereignty Report Generator)
 """
+
+from timmy.sovereignty.session_report import (
+    commit_report,
+    generate_and_commit_report,
+    generate_report,
+    mark_session_start,
+)
+
+__all__ = [
+    "generate_report",
+    "commit_report",
+    "generate_and_commit_report",
+    "mark_session_start",
+]
diff --git a/src/timmy/sovereignty/session_report.py b/src/timmy/sovereignty/session_report.py
new file mode 100644
index 00000000..d034e48c
--- /dev/null
+++ b/src/timmy/sovereignty/session_report.py
@@ -0,0 +1,442 @@
+"""Session Sovereignty Report Generator.
+
+Auto-generates a sovereignty scorecard at the end of each play session
+and commits it as a markdown file to the Gitea repo under
+``reports/sovereignty/``.
+
+Report contents (per issue #957):
+- Session duration + game played
+- Total model calls by type (VLM, LLM, TTS, API)
+- Total cache/rule hits by type
+- New skills crystallized (placeholder — pending skill-tracking impl)
+- Sovereignty delta (change from session start → end)
+- Cost breakdown (actual API spend)
+- Per-layer sovereignty %: perception, decision, narration
+- Trend comparison vs previous session
+
+Refs: #957 (Sovereignty P0) · #953 (The Sovereignty Loop)
+"""
+
+import base64
+import json
+import logging
+from datetime import UTC, datetime
+from pathlib import Path
+from typing import Any
+
+import httpx
+
+from config import settings
+
+# Optional module-level imports — degrade gracefully if unavailable at import time
+try:
+    from timmy.session_logger import get_session_logger
+except Exception:  # ImportError or circular import during early startup
+    get_session_logger = None  # type: ignore[assignment]
+
+try:
+    from infrastructure.sovereignty_metrics import GRADUATION_TARGETS, get_sovereignty_store
+except Exception:
+    GRADUATION_TARGETS: dict = {}  # type: ignore[assignment]
+    get_sovereignty_store = None  # type: ignore[assignment]
+
+logger = logging.getLogger(__name__)
+
+# Module-level session start time; set by mark_session_start()
+_SESSION_START: datetime | None = None
+
+
+# ---------------------------------------------------------------------------
+# Public API
+# ---------------------------------------------------------------------------
+
+
+def mark_session_start() -> None:
+    """Record the session start wall-clock time.
+
+    Call once during application startup so ``generate_report()`` can
+    compute accurate session durations.
+    """
+    global _SESSION_START
+    _SESSION_START = datetime.now(UTC)
+    logger.debug("Sovereignty: session start recorded at %s", _SESSION_START.isoformat())
+
+
+def generate_report(session_id: str = "dashboard") -> str:
+    """Render a sovereignty scorecard as a markdown string.
+
+    Pulls from:
+    - ``timmy.session_logger`` — message/tool-call/error counts
+    - ``infrastructure.sovereignty_metrics`` — cache hit rate, API cost,
+      graduation phase, and trend data
+
+    Args:
+        session_id: The session identifier (default: "dashboard").
+
+    Returns:
+        Markdown-formatted sovereignty report string.
+    """
+    now = datetime.now(UTC)
+    session_start = _SESSION_START or now
+    duration_secs = (now - session_start).total_seconds()
+
+    session_data = _gather_session_data()
+    sov_data = _gather_sovereignty_data()
+
+    return _render_markdown(now, session_id, duration_secs, session_data, sov_data)
+
+
+def commit_report(report_md: str, session_id: str = "dashboard") -> bool:
+    """Commit a sovereignty report to the Gitea repo.
+
+    Creates or updates ``reports/sovereignty/{date}_{session_id}.md``
+    via the Gitea Contents API.  Degrades gracefully: logs a warning
+    and returns ``False`` if Gitea is unreachable or misconfigured.
+
+    Args:
+        report_md: Markdown content to commit.
+        session_id: Session identifier used in the filename.
+
+    Returns:
+        ``True`` on success, ``False`` on failure.
+    """
+    if not settings.gitea_enabled:
+        logger.info("Sovereignty: Gitea disabled — skipping report commit")
+        return False
+
+    if not settings.gitea_token:
+        logger.warning("Sovereignty: no Gitea token — skipping report commit")
+        return False
+
+    date_str = datetime.now(UTC).strftime("%Y-%m-%d")
+    file_path = f"reports/sovereignty/{date_str}_{session_id}.md"
+    url = f"{settings.gitea_url}/api/v1/repos/{settings.gitea_repo}/contents/{file_path}"
+    headers = {
+        "Authorization": f"token {settings.gitea_token}",
+        "Content-Type": "application/json",
+    }
+    encoded_content = base64.b64encode(report_md.encode()).decode()
+    commit_message = (
+        f"report: sovereignty session {session_id} ({date_str})\n\n"
+        f"Auto-generated by Timmy. Refs #957"
+    )
+    payload: dict[str, Any] = {
+        "message": commit_message,
+        "content": encoded_content,
+    }
+
+    try:
+        with httpx.Client(timeout=10.0) as client:
+            # Fetch existing file SHA so we can update rather than create
+            check = client.get(url, headers=headers)
+            if check.status_code == 200:
+                existing = check.json()
+                payload["sha"] = existing.get("sha", "")
+
+            resp = client.put(url, headers=headers, json=payload)
+            resp.raise_for_status()
+
+        logger.info("Sovereignty: report committed to %s", file_path)
+        return True
+
+    except httpx.HTTPStatusError as exc:
+        logger.warning(
+            "Sovereignty: commit failed (HTTP %s): %s",
+            exc.response.status_code,
+            exc,
+        )
+        return False
+    except Exception as exc:
+        logger.warning("Sovereignty: commit failed: %s", exc)
+        return False
+
+
+async def generate_and_commit_report(session_id: str = "dashboard") -> bool:
+    """Generate and commit a sovereignty report for the current session.
+
+    Primary entry point — call at session end / application shutdown.
+    Wraps the synchronous ``commit_report`` call in ``asyncio.to_thread``
+    so it does not block the event loop.
+
+    Args:
+        session_id: The session identifier.
+
+    Returns:
+        ``True`` if the report was generated and committed successfully.
+    """
+    import asyncio
+
+    try:
+        report_md = generate_report(session_id)
+        logger.info("Sovereignty: report generated (%d chars)", len(report_md))
+        committed = await asyncio.to_thread(commit_report, report_md, session_id)
+        return committed
+    except Exception as exc:
+        logger.warning("Sovereignty: report generation failed: %s", exc)
+        return False
+
+
+# ---------------------------------------------------------------------------
+# Internal helpers
+# ---------------------------------------------------------------------------
+
+
+def _format_duration(seconds: float) -> str:
+    """Format a duration in seconds as a human-readable string."""
+    total = int(seconds)
+    hours, remainder = divmod(total, 3600)
+    minutes, secs = divmod(remainder, 60)
+    if hours:
+        return f"{hours}h {minutes}m {secs}s"
+    if minutes:
+        return f"{minutes}m {secs}s"
+    return f"{secs}s"
+
+
+def _gather_session_data() -> dict[str, Any]:
+    """Pull session statistics from the session logger.
+
+    Returns a dict with:
+    - ``user_messages``, ``timmy_messages``, ``tool_calls``, ``errors``
+    - ``tool_call_breakdown``: dict[tool_name, count]
+    """
+    default: dict[str, Any] = {
+        "user_messages": 0,
+        "timmy_messages": 0,
+        "tool_calls": 0,
+        "errors": 0,
+        "tool_call_breakdown": {},
+    }
+
+    try:
+        if get_session_logger is None:
+            return default
+        sl = get_session_logger()
+        sl.flush()
+
+        # Read today's session file directly for accurate counts
+        if not sl.session_file.exists():
+            return default
+
+        entries: list[dict] = []
+        with open(sl.session_file) as f:
+            for line in f:
+                line = line.strip()
+                if line:
+                    try:
+                        entries.append(json.loads(line))
+                    except json.JSONDecodeError:
+                        continue
+
+        tool_breakdown: dict[str, int] = {}
+        user_msgs = timmy_msgs = tool_calls = errors = 0
+
+        for entry in entries:
+            etype = entry.get("type")
+            if etype == "message":
+                if entry.get("role") == "user":
+                    user_msgs += 1
+                elif entry.get("role") == "timmy":
+                    timmy_msgs += 1
+            elif etype == "tool_call":
+                tool_calls += 1
+                tool_name = entry.get("tool", "unknown")
+                tool_breakdown[tool_name] = tool_breakdown.get(tool_name, 0) + 1
+            elif etype == "error":
+                errors += 1
+
+        return {
+            "user_messages": user_msgs,
+            "timmy_messages": timmy_msgs,
+            "tool_calls": tool_calls,
+            "errors": errors,
+            "tool_call_breakdown": tool_breakdown,
+        }
+
+    except Exception as exc:
+        logger.warning("Sovereignty: failed to gather session data: %s", exc)
+        return default
+
+
+def _gather_sovereignty_data() -> dict[str, Any]:
+    """Pull sovereignty metrics from the SQLite store.
+
+    Returns a dict with:
+    - ``metrics``: summary from ``SovereigntyMetricsStore.get_summary()``
+    - ``deltas``: per-metric start/end values within recent history window
+    - ``previous_session``: most recent prior value for each metric
+    """
+    try:
+        if get_sovereignty_store is None:
+            return {"metrics": {}, "deltas": {}, "previous_session": {}}
+        store = get_sovereignty_store()
+        summary = store.get_summary()
+
+        deltas: dict[str, dict[str, Any]] = {}
+        previous_session: dict[str, float | None] = {}
+
+        for metric_type in GRADUATION_TARGETS:
+            history = store.get_latest(metric_type, limit=10)
+            if len(history) >= 2:
+                deltas[metric_type] = {
+                    "start": history[-1]["value"],
+                    "end": history[0]["value"],
+                }
+                previous_session[metric_type] = history[1]["value"]
+            elif len(history) == 1:
+                deltas[metric_type] = {"start": history[0]["value"], "end": history[0]["value"]}
+                previous_session[metric_type] = None
+            else:
+                deltas[metric_type] = {"start": None, "end": None}
+                previous_session[metric_type] = None
+
+        return {
+            "metrics": summary,
+            "deltas": deltas,
+            "previous_session": previous_session,
+        }
+
+    except Exception as exc:
+        logger.warning("Sovereignty: failed to gather sovereignty data: %s", exc)
+        return {"metrics": {}, "deltas": {}, "previous_session": {}}
+
+
+def _render_markdown(
+    now: datetime,
+    session_id: str,
+    duration_secs: float,
+    session_data: dict[str, Any],
+    sov_data: dict[str, Any],
+) -> str:
+    """Assemble the full sovereignty report in markdown."""
+    lines: list[str] = []
+
+    # Header
+    lines += [
+        "# Sovereignty Session Report",
+        "",
+        f"**Session ID:** `{session_id}`  ",
+        f"**Date:** {now.strftime('%Y-%m-%d')}  ",
+        f"**Duration:** {_format_duration(duration_secs)}  ",
+        f"**Generated:** {now.isoformat()}",
+        "",
+        "---",
+        "",
+    ]
+
+    # Session activity
+    lines += [
+        "## Session Activity",
+        "",
+        "| Metric | Count |",
+        "|--------|-------|",
+        f"| User messages | {session_data['user_messages']} |",
+        f"| Timmy responses | {session_data['timmy_messages']} |",
+        f"| Tool calls | {session_data['tool_calls']} |",
+        f"| Errors | {session_data['errors']} |",
+        "",
+    ]
+
+    tool_breakdown = session_data.get("tool_call_breakdown", {})
+    if tool_breakdown:
+        lines += ["### Model Calls by Tool", ""]
+        for tool_name, count in sorted(tool_breakdown.items(), key=lambda x: -x[1]):
+            lines.append(f"- `{tool_name}`: {count}")
+        lines.append("")
+
+    # Sovereignty scorecard
+
+    lines += [
+        "## Sovereignty Scorecard",
+        "",
+        "| Metric | Current | Target (graduation) | Phase |",
+        "|--------|---------|---------------------|-------|",
+    ]
+
+    for metric_type, data in sov_data["metrics"].items():
+        current = data.get("current")
+        current_str = f"{current:.4f}" if current is not None else "N/A"
+        grad_target = GRADUATION_TARGETS.get(metric_type, {}).get("graduation")
+        grad_str = f"{grad_target:.4f}" if isinstance(grad_target, (int, float)) else "N/A"
+        phase = data.get("phase", "unknown")
+        lines.append(f"| {metric_type} | {current_str} | {grad_str} | {phase} |")
+
+    lines += ["", "### Sovereignty Delta (This Session)", ""]
+
+    for metric_type, delta_info in sov_data.get("deltas", {}).items():
+        start_val = delta_info.get("start")
+        end_val = delta_info.get("end")
+        if start_val is not None and end_val is not None:
+            diff = end_val - start_val
+            sign = "+" if diff >= 0 else ""
+            lines.append(
+                f"- **{metric_type}**: {start_val:.4f} → {end_val:.4f} ({sign}{diff:.4f})"
+            )
+        else:
+            lines.append(f"- **{metric_type}**: N/A (no data recorded)")
+
+    # Cost breakdown
+    lines += ["", "## Cost Breakdown", ""]
+    api_cost_data = sov_data["metrics"].get("api_cost", {})
+    current_cost = api_cost_data.get("current")
+    if current_cost is not None:
+        lines.append(f"- **Total API spend (latest recorded):** ${current_cost:.4f}")
+    else:
+        lines.append("- **Total API spend:** N/A (no data recorded)")
+    lines.append("")
+
+    # Per-layer sovereignty
+    lines += [
+        "## Per-Layer Sovereignty",
+        "",
+        "| Layer | Sovereignty % |",
+        "|-------|--------------|",
+        "| Perception (VLM) | N/A |",
+        "| Decision (LLM) | N/A |",
+        "| Narration (TTS) | N/A |",
+        "",
+        "> Per-layer tracking requires instrumented inference calls. See #957.",
+        "",
+    ]
+
+    # Skills crystallized
+    lines += [
+        "## Skills Crystallized",
+        "",
+        "_Skill crystallization tracking not yet implemented. See #957._",
+        "",
+    ]
+
+    # Trend vs previous session
+    lines += ["## Trend vs Previous Session", ""]
+    prev_data = sov_data.get("previous_session", {})
+    has_prev = any(v is not None for v in prev_data.values())
+
+    if has_prev:
+        lines += [
+            "| Metric | Previous | Current | Change |",
+            "|--------|----------|---------|--------|",
+        ]
+        for metric_type, curr_info in sov_data["metrics"].items():
+            curr_val = curr_info.get("current")
+            prev_val = prev_data.get(metric_type)
+            curr_str = f"{curr_val:.4f}" if curr_val is not None else "N/A"
+            prev_str = f"{prev_val:.4f}" if prev_val is not None else "N/A"
+            if curr_val is not None and prev_val is not None:
+                diff = curr_val - prev_val
+                sign = "+" if diff >= 0 else ""
+                change_str = f"{sign}{diff:.4f}"
+            else:
+                change_str = "N/A"
+            lines.append(f"| {metric_type} | {prev_str} | {curr_str} | {change_str} |")
+        lines.append("")
+    else:
+        lines += ["_No previous session data available for comparison._", ""]
+
+    # Footer
+    lines += [
+        "---",
+        "_Auto-generated by Timmy · Session Sovereignty Report · Refs: #957_",
+    ]
+
+    return "\n".join(lines)
diff --git a/tests/timmy/test_session_report.py b/tests/timmy/test_session_report.py
new file mode 100644
index 00000000..54f2b736
--- /dev/null
+++ b/tests/timmy/test_session_report.py
@@ -0,0 +1,444 @@
+"""Tests for timmy.sovereignty.session_report.
+
+Refs: #957 (Session Sovereignty Report Generator)
+"""
+
+import base64
+import json
+import time
+from datetime import UTC, datetime
+from pathlib import Path
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+pytestmark = pytest.mark.unit
+
+from timmy.sovereignty.session_report import (
+    _format_duration,
+    _gather_session_data,
+    _gather_sovereignty_data,
+    _render_markdown,
+    commit_report,
+    generate_and_commit_report,
+    generate_report,
+    mark_session_start,
+)
+
+
+# ---------------------------------------------------------------------------
+# _format_duration
+# ---------------------------------------------------------------------------
+
+
+class TestFormatDuration:
+    def test_seconds_only(self):
+        assert _format_duration(45) == "45s"
+
+    def test_minutes_and_seconds(self):
+        assert _format_duration(125) == "2m 5s"
+
+    def test_hours_minutes_seconds(self):
+        assert _format_duration(3661) == "1h 1m 1s"
+
+    def test_zero(self):
+        assert _format_duration(0) == "0s"
+
+
+# ---------------------------------------------------------------------------
+# mark_session_start + generate_report (smoke)
+# ---------------------------------------------------------------------------
+
+
+class TestMarkSessionStart:
+    def test_sets_session_start(self):
+        import timmy.sovereignty.session_report as sr
+
+        sr._SESSION_START = None
+        mark_session_start()
+        assert sr._SESSION_START is not None
+        assert sr._SESSION_START.tzinfo == UTC
+
+    def test_idempotent_overwrite(self):
+        import timmy.sovereignty.session_report as sr
+
+        mark_session_start()
+        first = sr._SESSION_START
+        time.sleep(0.01)
+        mark_session_start()
+        second = sr._SESSION_START
+        assert second >= first
+
+
+# ---------------------------------------------------------------------------
+# _gather_session_data
+# ---------------------------------------------------------------------------
+
+
+class TestGatherSessionData:
+    def test_returns_defaults_when_no_file(self, tmp_path):
+        mock_logger = MagicMock()
+        mock_logger.flush.return_value = None
+        mock_logger.session_file = tmp_path / "nonexistent.jsonl"
+
+        with patch(
+            "timmy.sovereignty.session_report.get_session_logger",
+            return_value=mock_logger,
+        ):
+            data = _gather_session_data()
+
+        assert data["user_messages"] == 0
+        assert data["timmy_messages"] == 0
+        assert data["tool_calls"] == 0
+        assert data["errors"] == 0
+        assert data["tool_call_breakdown"] == {}
+
+    def test_counts_entries_correctly(self, tmp_path):
+        session_file = tmp_path / "session_2026-03-23.jsonl"
+        entries = [
+            {"type": "message", "role": "user", "content": "hello"},
+            {"type": "message", "role": "timmy", "content": "hi"},
+            {"type": "message", "role": "user", "content": "test"},
+            {"type": "tool_call", "tool": "memory_search", "args": {}, "result": "found"},
+            {"type": "tool_call", "tool": "memory_search", "args": {}, "result": "nope"},
+            {"type": "tool_call", "tool": "shell", "args": {}, "result": "ok"},
+            {"type": "error", "error": "boom"},
+        ]
+        with open(session_file, "w") as f:
+            for e in entries:
+                f.write(json.dumps(e) + "\n")
+
+        mock_logger = MagicMock()
+        mock_logger.flush.return_value = None
+        mock_logger.session_file = session_file
+
+        with patch(
+            "timmy.sovereignty.session_report.get_session_logger",
+            return_value=mock_logger,
+        ):
+            data = _gather_session_data()
+
+        assert data["user_messages"] == 2
+        assert data["timmy_messages"] == 1
+        assert data["tool_calls"] == 3
+        assert data["errors"] == 1
+        assert data["tool_call_breakdown"]["memory_search"] == 2
+        assert data["tool_call_breakdown"]["shell"] == 1
+
+    def test_graceful_on_import_error(self):
+        with patch(
+            "timmy.sovereignty.session_report.get_session_logger",
+            side_effect=ImportError("no session_logger"),
+        ):
+            data = _gather_session_data()
+
+        assert data["tool_calls"] == 0
+
+
+# ---------------------------------------------------------------------------
+# _gather_sovereignty_data
+# ---------------------------------------------------------------------------
+
+
+class TestGatherSovereigntyData:
+    def test_returns_empty_on_import_error(self):
+        with patch.dict("sys.modules", {"infrastructure.sovereignty_metrics": None}):
+            with patch(
+                "timmy.sovereignty.session_report.get_sovereignty_store",
+                side_effect=ImportError("no store"),
+            ):
+                data = _gather_sovereignty_data()
+
+        assert data["metrics"] == {}
+        assert data["deltas"] == {}
+        assert data["previous_session"] == {}
+
+    def test_populates_deltas_from_history(self):
+        mock_store = MagicMock()
+        mock_store.get_summary.return_value = {
+            "cache_hit_rate": {"current": 0.5, "phase": "week1"},
+        }
+        # get_latest returns newest-first
+        mock_store.get_latest.return_value = [
+            {"value": 0.5},
+            {"value": 0.3},
+            {"value": 0.1},
+        ]
+
+        with patch(
+            "timmy.sovereignty.session_report.get_sovereignty_store",
+            return_value=mock_store,
+        ):
+            with patch(
+                "timmy.sovereignty.session_report.GRADUATION_TARGETS",
+                {"cache_hit_rate": {"graduation": 0.9}},
+            ):
+                data = _gather_sovereignty_data()
+
+        delta = data["deltas"].get("cache_hit_rate")
+        assert delta is not None
+        assert delta["start"] == 0.1  # oldest in window
+        assert delta["end"] == 0.5    # most recent
+        assert data["previous_session"]["cache_hit_rate"] == 0.3
+
+    def test_single_data_point_no_delta(self):
+        mock_store = MagicMock()
+        mock_store.get_summary.return_value = {}
+        mock_store.get_latest.return_value = [{"value": 0.4}]
+
+        with patch(
+            "timmy.sovereignty.session_report.get_sovereignty_store",
+            return_value=mock_store,
+        ):
+            with patch(
+                "timmy.sovereignty.session_report.GRADUATION_TARGETS",
+                {"api_cost": {"graduation": 0.01}},
+            ):
+                data = _gather_sovereignty_data()
+
+        delta = data["deltas"]["api_cost"]
+        assert delta["start"] == 0.4
+        assert delta["end"] == 0.4
+        assert data["previous_session"]["api_cost"] is None
+
+
+# ---------------------------------------------------------------------------
+# generate_report (integration — smoke test)
+# ---------------------------------------------------------------------------
+
+
+class TestGenerateReport:
+    def _minimal_session_data(self):
+        return {
+            "user_messages": 3,
+            "timmy_messages": 3,
+            "tool_calls": 2,
+            "errors": 0,
+            "tool_call_breakdown": {"memory_search": 2},
+        }
+
+    def _minimal_sov_data(self):
+        return {
+            "metrics": {
+                "cache_hit_rate": {"current": 0.45, "phase": "week1"},
+                "api_cost": {"current": 0.12, "phase": "pre-start"},
+            },
+            "deltas": {
+                "cache_hit_rate": {"start": 0.40, "end": 0.45},
+                "api_cost": {"start": 0.10, "end": 0.12},
+            },
+            "previous_session": {
+                "cache_hit_rate": 0.40,
+                "api_cost": 0.10,
+            },
+        }
+
+    def test_smoke_produces_markdown(self):
+        with (
+            patch(
+                "timmy.sovereignty.session_report._gather_session_data",
+                return_value=self._minimal_session_data(),
+            ),
+            patch(
+                "timmy.sovereignty.session_report._gather_sovereignty_data",
+                return_value=self._minimal_sov_data(),
+            ),
+        ):
+            report = generate_report("test-session")
+
+        assert "# Sovereignty Session Report" in report
+        assert "test-session" in report
+        assert "## Session Activity" in report
+        assert "## Sovereignty Scorecard" in report
+        assert "## Cost Breakdown" in report
+        assert "## Trend vs Previous Session" in report
+
+    def test_report_contains_session_stats(self):
+        with (
+            patch(
+                "timmy.sovereignty.session_report._gather_session_data",
+                return_value=self._minimal_session_data(),
+            ),
+            patch(
+                "timmy.sovereignty.session_report._gather_sovereignty_data",
+                return_value=self._minimal_sov_data(),
+            ),
+        ):
+            report = generate_report()
+
+        assert "| User messages | 3 |" in report
+        assert "memory_search" in report
+
+    def test_report_no_previous_session(self):
+        sov = self._minimal_sov_data()
+        sov["previous_session"] = {"cache_hit_rate": None, "api_cost": None}
+
+        with (
+            patch(
+                "timmy.sovereignty.session_report._gather_session_data",
+                return_value=self._minimal_session_data(),
+            ),
+            patch(
+                "timmy.sovereignty.session_report._gather_sovereignty_data",
+                return_value=sov,
+            ),
+        ):
+            report = generate_report()
+
+        assert "No previous session data" in report
+
+
+# ---------------------------------------------------------------------------
+# commit_report
+# ---------------------------------------------------------------------------
+
+
+class TestCommitReport:
+    def test_returns_false_when_gitea_disabled(self):
+        with patch("timmy.sovereignty.session_report.settings") as mock_settings:
+            mock_settings.gitea_enabled = False
+            result = commit_report("# test", "dashboard")
+
+        assert result is False
+
+    def test_returns_false_when_no_token(self):
+        with patch("timmy.sovereignty.session_report.settings") as mock_settings:
+            mock_settings.gitea_enabled = True
+            mock_settings.gitea_token = ""
+            result = commit_report("# test", "dashboard")
+
+        assert result is False
+
+    def test_creates_file_via_put(self):
+        mock_response = MagicMock()
+        mock_response.status_code = 201
+        mock_response.raise_for_status.return_value = None
+
+        mock_check = MagicMock()
+        mock_check.status_code = 404  # file does not exist yet
+
+        mock_client = MagicMock()
+        mock_client.__enter__ = MagicMock(return_value=mock_client)
+        mock_client.__exit__ = MagicMock(return_value=False)
+        mock_client.get.return_value = mock_check
+        mock_client.put.return_value = mock_response
+
+        with (
+            patch("timmy.sovereignty.session_report.settings") as mock_settings,
+            patch("timmy.sovereignty.session_report.httpx.Client", return_value=mock_client),
+        ):
+            mock_settings.gitea_enabled = True
+            mock_settings.gitea_token = "fake-token"
+            mock_settings.gitea_url = "http://localhost:3000"
+            mock_settings.gitea_repo = "owner/repo"
+
+            result = commit_report("# report content", "dashboard")
+
+        assert result is True
+        mock_client.put.assert_called_once()
+        call_kwargs = mock_client.put.call_args
+        payload = call_kwargs.kwargs.get("json", call_kwargs.args[1] if len(call_kwargs.args) > 1 else {})
+        decoded = base64.b64decode(payload["content"]).decode()
+        assert "# report content" in decoded
+
+    def test_updates_existing_file_with_sha(self):
+        mock_check = MagicMock()
+        mock_check.status_code = 200
+        mock_check.json.return_value = {"sha": "abc123"}
+
+        mock_response = MagicMock()
+        mock_response.raise_for_status.return_value = None
+
+        mock_client = MagicMock()
+        mock_client.__enter__ = MagicMock(return_value=mock_client)
+        mock_client.__exit__ = MagicMock(return_value=False)
+        mock_client.get.return_value = mock_check
+        mock_client.put.return_value = mock_response
+
+        with (
+            patch("timmy.sovereignty.session_report.settings") as mock_settings,
+            patch("timmy.sovereignty.session_report.httpx.Client", return_value=mock_client),
+        ):
+            mock_settings.gitea_enabled = True
+            mock_settings.gitea_token = "fake-token"
+            mock_settings.gitea_url = "http://localhost:3000"
+            mock_settings.gitea_repo = "owner/repo"
+
+            result = commit_report("# updated", "dashboard")
+
+        assert result is True
+        payload = mock_client.put.call_args.kwargs.get("json", {})
+        assert payload.get("sha") == "abc123"
+
+    def test_returns_false_on_http_error(self):
+        import httpx
+
+        mock_check = MagicMock()
+        mock_check.status_code = 404
+
+        mock_client = MagicMock()
+        mock_client.__enter__ = MagicMock(return_value=mock_client)
+        mock_client.__exit__ = MagicMock(return_value=False)
+        mock_client.get.return_value = mock_check
+        mock_client.put.side_effect = httpx.HTTPStatusError(
+            "403", request=MagicMock(), response=MagicMock(status_code=403)
+        )
+
+        with (
+            patch("timmy.sovereignty.session_report.settings") as mock_settings,
+            patch("timmy.sovereignty.session_report.httpx.Client", return_value=mock_client),
+        ):
+            mock_settings.gitea_enabled = True
+            mock_settings.gitea_token = "fake-token"
+            mock_settings.gitea_url = "http://localhost:3000"
+            mock_settings.gitea_repo = "owner/repo"
+
+            result = commit_report("# test", "dashboard")
+
+        assert result is False
+
+
+# ---------------------------------------------------------------------------
+# generate_and_commit_report (async)
+# ---------------------------------------------------------------------------
+
+
+class TestGenerateAndCommitReport:
+    async def test_returns_true_on_success(self):
+        with (
+            patch(
+                "timmy.sovereignty.session_report.generate_report",
+                return_value="# mock report",
+            ),
+            patch(
+                "timmy.sovereignty.session_report.commit_report",
+                return_value=True,
+            ),
+        ):
+            result = await generate_and_commit_report("test")
+
+        assert result is True
+
+    async def test_returns_false_when_commit_fails(self):
+        with (
+            patch(
+                "timmy.sovereignty.session_report.generate_report",
+                return_value="# mock report",
+            ),
+            patch(
+                "timmy.sovereignty.session_report.commit_report",
+                return_value=False,
+            ),
+        ):
+            result = await generate_and_commit_report()
+
+        assert result is False
+
+    async def test_graceful_on_exception(self):
+        with patch(
+            "timmy.sovereignty.session_report.generate_report",
+            side_effect=RuntimeError("explode"),
+        ):
+            result = await generate_and_commit_report()
+
+        assert result is False