feat: add job history tab with localStorage persistence (#31)

Add a bottom-sheet History panel that shows completed jobs in reverse
chronological order with expandable results.

- New history.js module: persists up to 50 jobs in localStorage
  (timmy_history_v1), renders rows with prompt/cost/relative-time,
  smooth expand/collapse animation, pull-to-refresh and refresh button
- index.html: History panel HTML + CSS (bottom sheet slides up from
  bottom edge), "⏱ HISTORY" button added to top-buttons bar
- payment.js: calls addHistoryEntry() when a Lightning job reaches
  complete or rejected state; tracks currentRequest across async flow
- session.js: calls addHistoryEntry() after each session request
  completes, computing cost from balance delta
- main.js: imports and calls initHistoryPanel() on first init

Fixes #31

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

the-matrix/index.html

@@ -599,6 +599,109 @@
       #activity-heatmap #heatmap-bar { display: none; }
       #heatmap-icon-btn { display: block; }
     }
+
+    /* ── History button ──────────────────────────────────────────────── */
+    #open-history-btn {
+      font-family: 'Courier New', monospace; font-size: 11px; font-weight: bold;
+      color: #aabbdd; background: rgba(20, 16, 50, 0.85); border: 1px solid #2a2a44;
+      padding: 7px 18px; cursor: pointer; letter-spacing: 2px;
+      box-shadow: 0 0 14px #2244aa22;
+      transition: background 0.15s, box-shadow 0.15s, color 0.15s;
+      border-radius: 2px;
+      min-height: 36px;
+    }
+    #open-history-btn:hover, #open-history-btn:active {
+      background: rgba(35, 28, 80, 0.95);
+      box-shadow: 0 0 20px #3355aa44;
+      color: #ccddff;
+    }
+
+    /* ── History panel (bottom sheet) ───────────────────────────────── */
+    #history-panel {
+      position: fixed; bottom: -100%; left: 0; right: 0;
+      height: 70vh;
+      background: rgba(5, 3, 12, 0.97);
+      border-top: 1px solid #1a1a2e;
+      z-index: 100;
+      font-family: 'Courier New', monospace;
+      transition: bottom 0.35s cubic-bezier(0.4, 0, 0.2, 1);
+      box-shadow: 0 -8px 32px rgba(40, 60, 120, 0.18);
+      display: flex; flex-direction: column;
+    }
+    #history-panel.open { bottom: 60px; }
+
+    .hist-header {
+      display: flex; align-items: center; gap: 8px;
+      padding: 14px 20px 10px;
+      border-bottom: 1px solid #1a1a2e;
+      font-size: 12px; letter-spacing: 3px; color: #5577aa;
+      flex-shrink: 0;
+    }
+    .hist-header span { flex: 1; text-shadow: 0 0 8px #2244aa66; }
+    #history-refresh-btn, #history-close {
+      background: transparent; border: 1px solid #1a1a2e;
+      color: #334466; font-family: 'Courier New', monospace;
+      font-size: 11px; padding: 3px 10px; cursor: pointer;
+      transition: color 0.2s, border-color 0.2s; letter-spacing: 1px;
+      border-radius: 2px;
+    }
+    #history-refresh-btn:hover { color: #5577aa; border-color: #334466; }
+    #history-refresh-btn:disabled { opacity: 0.4; cursor: default; }
+    #history-close { font-size: 14px; padding: 3px 8px; }
+    #history-close:hover { color: #6688bb; border-color: #4466aa; }
+
+    #history-list {
+      flex: 1; overflow-y: auto; padding: 12px 16px;
+      overscroll-behavior: contain;
+    }
+
+    .hist-empty {
+      color: #334466; font-size: 11px; letter-spacing: 1px;
+      line-height: 1.8; text-align: center;
+      margin-top: 40px; padding: 0 20px;
+    }
+
+    .hist-row {
+      border: 1px solid #1a1a2e; border-radius: 2px;
+      margin-bottom: 10px; overflow: hidden;
+      background: #060310;
+    }
+    .hist-row.hist-rejected { border-color: #331111; }
+    .hist-row-header {
+      padding: 10px 12px; cursor: pointer;
+      transition: background 0.15s;
+    }
+    .hist-row-header:hover { background: rgba(30, 25, 60, 0.6); }
+    .hist-prompt {
+      color: #aabbdd; font-size: 12px; line-height: 1.5;
+      display: -webkit-box; -webkit-line-clamp: 2;
+      -webkit-box-orient: vertical; overflow: hidden;
+      margin-bottom: 6px;
+    }
+    .hist-meta {
+      display: flex; gap: 12px; align-items: center;
+    }
+    .hist-cost { font-size: 10px; color: #ffcc44; letter-spacing: 1px; }
+    .hist-rejected .hist-cost { color: #994444; }
+    .hist-time { font-size: 10px; color: #334466; letter-spacing: 0.5px; flex: 1; }
+    .hist-chevron { font-size: 10px; color: #334466; transition: color 0.15s; }
+    .hist-row-header:hover .hist-chevron { color: #5577aa; }
+
+    .hist-row-body {
+      max-height: 0; overflow: hidden;
+      transition: max-height 0.3s ease-out;
+    }
+    .hist-row.expanded .hist-row-body {
+      max-height: 400px;
+      border-top: 1px solid #1a1a2e;
+    }
+    .hist-result {
+      color: #aabbdd; font-family: 'Courier New', monospace;
+      font-size: 11px; line-height: 1.6;
+      white-space: pre-wrap; word-break: break-word;
+      padding: 12px; margin: 0;
+      max-height: 400px; overflow-y: auto;
+    }
   </style>
 </head>
 <body>
@@ -640,6 +743,7 @@
   <div id="top-buttons">
     <button id="open-panel-btn">⚡ SUBMIT JOB</button>
     <button id="open-session-btn">⚡ FUND SESSION</button>
+    <button id="open-history-btn">⏱ HISTORY</button>
     <a id="relay-admin-btn" href="/admin/relay">⚙ RELAY ADMIN</a>
   </div>
 
@@ -789,6 +893,16 @@
     <div id="session-error"></div>
   </div>
 
+  <!-- ── History panel (bottom sheet) ─────────────────────────────── -->
+  <div id="history-panel">
+    <div class="hist-header">
+      <span>⏱ JOB HISTORY</span>
+      <button id="history-refresh-btn">↺ REFRESH</button>
+      <button id="history-close">✕</button>
+    </div>
+    <div id="history-list"></div>
+  </div>
+
   <!-- ── FPS crosshair ─────────────────────────────────────────────── -->
   <div id="crosshair"></div>
 

the-matrix/js/history.js

@@ -0,0 +1,222 @@
+/**
+ * history.js — Job history panel for Timmy Tower Workshop.
+ *
+ * Persists completed jobs in localStorage and renders them in a
+ * bottom-sheet panel with expandable results and pull-to-refresh.
+ *
+ * Public API:
+ *   addHistoryEntry(entry)   — called by payment.js / session.js on completion
+ *   initHistoryPanel()       — wire up DOM (call once from main.js)
+ */
+
+const LS_KEY      = 'timmy_history_v1';
+const MAX_ENTRIES = 50;
+
+// ── Persistence ───────────────────────────────────────────────────────────────
+
+function _loadEntries() {
+  try {
+    const raw = localStorage.getItem(LS_KEY);
+    return raw ? JSON.parse(raw) : [];
+  } catch {
+    return [];
+  }
+}
+
+function _saveEntries(entries) {
+  try {
+    localStorage.setItem(LS_KEY, JSON.stringify(entries));
+  } catch { /* storage full — oldest already trimmed */ }
+}
+
+/**
+ * Record a completed job.
+ * @param {object} entry
+ * @param {string} entry.jobId
+ * @param {string} entry.request      — user prompt
+ * @param {number} entry.costSats     — sats charged (0 for free/session)
+ * @param {string} entry.result       — AI answer or rejection reason
+ * @param {string} entry.state        — 'complete' | 'rejected' | 'failed'
+ * @param {string} [entry.completedAt] — ISO timestamp (defaults to now)
+ */
+export function addHistoryEntry({ jobId, request, costSats, result, state, completedAt }) {
+  const entries = _loadEntries();
+  const entry = {
+    jobId:       jobId       ?? `local-${Date.now()}`,
+    request:     request     ?? '',
+    costSats:    costSats    ?? 0,
+    result:      result      ?? '',
+    state:       state       ?? 'complete',
+    completedAt: completedAt ?? new Date().toISOString(),
+  };
+  const idx = entries.findIndex(e => e.jobId === entry.jobId);
+  if (idx >= 0) {
+    entries[idx] = entry;
+  } else {
+    entries.unshift(entry); // newest first
+    if (entries.length > MAX_ENTRIES) entries.length = MAX_ENTRIES;
+  }
+  _saveEntries(entries);
+}
+
+// ── Helpers ───────────────────────────────────────────────────────────────────
+
+function _relativeTime(isoString) {
+  try {
+    const diff = Date.now() - new Date(isoString).getTime();
+    const secs = Math.floor(diff / 1000);
+    if (secs < 60)  return `${secs}s ago`;
+    const mins = Math.floor(secs / 60);
+    if (mins < 60)  return `${mins} min ago`;
+    const hrs  = Math.floor(mins / 60);
+    if (hrs  < 24)  return `${hrs}h ago`;
+    const days = Math.floor(hrs  / 24);
+    return `${days}d ago`;
+  } catch {
+    return '';
+  }
+}
+
+function _escHtml(text) {
+  return String(text)
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;');
+}
+
+function _truncate(text, maxLen) {
+  if (!text) return '';
+  return text.length > maxLen ? text.slice(0, maxLen) + '…' : text;
+}
+
+// ── Rendering ─────────────────────────────────────────────────────────────────
+
+function _renderEntries(entries, container) {
+  container.innerHTML = '';
+
+  if (!entries.length) {
+    const empty = document.createElement('div');
+    empty.className = 'hist-empty';
+    empty.textContent = 'No completed jobs yet. Submit a job to see your history here.';
+    container.appendChild(empty);
+    return;
+  }
+
+  entries.forEach(entry => {
+    const row = document.createElement('div');
+    row.className = 'hist-row' + (entry.state === 'rejected' ? ' hist-rejected' : '');
+
+    // ── Header (always visible) ────────────────────────────────────────────
+    const header = document.createElement('div');
+    header.className = 'hist-row-header';
+
+    const promptEl = document.createElement('div');
+    promptEl.className = 'hist-prompt';
+    promptEl.textContent = _truncate(entry.request, 140);
+
+    const metaEl = document.createElement('div');
+    metaEl.className = 'hist-meta';
+
+    const costEl = document.createElement('span');
+    costEl.className = 'hist-cost';
+    if (entry.state === 'rejected') {
+      costEl.textContent = 'rejected';
+    } else if (entry.costSats > 0) {
+      costEl.textContent = `⚡ ${entry.costSats} sats`;
+    } else {
+      costEl.textContent = 'free';
+    }
+
+    const timeEl = document.createElement('span');
+    timeEl.className = 'hist-time';
+    timeEl.textContent = _relativeTime(entry.completedAt);
+
+    const chevronEl = document.createElement('span');
+    chevronEl.className = 'hist-chevron';
+    chevronEl.textContent = '▸';
+
+    metaEl.appendChild(costEl);
+    metaEl.appendChild(timeEl);
+    metaEl.appendChild(chevronEl);
+
+    header.appendChild(promptEl);
+    header.appendChild(metaEl);
+
+    // ── Body (expandable) ──────────────────────────────────────────────────
+    const body = document.createElement('div');
+    body.className = 'hist-row-body';
+
+    const pre = document.createElement('pre');
+    pre.className = 'hist-result';
+    pre.textContent = entry.result || '(no result)';
+    body.appendChild(pre);
+
+    // ── Toggle ─────────────────────────────────────────────────────────────
+    let expanded = false;
+    header.addEventListener('click', () => {
+      expanded = !expanded;
+      row.classList.toggle('expanded', expanded);
+      chevronEl.textContent = expanded ? '▾' : '▸';
+    });
+
+    row.appendChild(header);
+    row.appendChild(body);
+    container.appendChild(row);
+  });
+}
+
+// ── Panel state ───────────────────────────────────────────────────────────────
+
+let _panel      = null;
+let _list       = null;
+let _refreshBtn = null;
+
+function _open() {
+  if (!_panel) return;
+  _panel.classList.add('open');
+  _refresh();
+}
+
+function _close() {
+  _panel?.classList.remove('open');
+}
+
+function _refresh() {
+  if (!_list) return;
+  const entries = _loadEntries();
+  _renderEntries(entries, _list);
+  if (_refreshBtn) {
+    _refreshBtn.textContent = '↺ REFRESH';
+    _refreshBtn.disabled = false;
+  }
+}
+
+export function initHistoryPanel() {
+  _panel      = document.getElementById('history-panel');
+  _list       = document.getElementById('history-list');
+  _refreshBtn = document.getElementById('history-refresh-btn');
+  if (!_panel) return;
+
+  document.getElementById('open-history-btn')?.addEventListener('click', _open);
+  document.getElementById('history-close')?.addEventListener('click', _close);
+
+  if (_refreshBtn) {
+    _refreshBtn.addEventListener('click', () => {
+      _refreshBtn.textContent = '↺ …';
+      _refreshBtn.disabled = true;
+      setTimeout(_refresh, 150);
+    });
+  }
+
+  // Pull-to-refresh: detect downward drag when already scrolled to top
+  let _touchStartY = 0;
+  _list?.addEventListener('touchstart', e => {
+    _touchStartY = e.touches[0].clientY;
+  }, { passive: true });
+  _list?.addEventListener('touchend', e => {
+    const dy = e.changedTouches[0].clientY - _touchStartY;
+    if (dy > 60 && _list.scrollTop === 0) {
+      _refresh();
+    }
+  }, { passive: true });
+}

the-matrix/js/main.js

@@ -11,6 +11,7 @@ import { initInteraction, disposeInteraction, registerSlapTarget } from './inter
 import { initWebSocket, getConnectionState, getJobCount } from './websocket.js';
 import { initPaymentPanel } from './payment.js';
 import { initSessionPanel } from './session.js';
+import { initHistoryPanel } from './history.js';
 import { initNostrIdentity } from './nostr-identity.js';
 import { warmup as warmupEdgeWorker, onReady as onEdgeWorkerReady } from './edge-worker-client.js';
 import { setEdgeWorkerReady } from './ui.js';
@@ -46,6 +47,7 @@ function buildWorld(firstInit, stateSnapshot) {
     initWebSocket(scene);
     initPaymentPanel();
     initSessionPanel();
+    initHistoryPanel();
     void initNostrIdentity('/api');
     warmupEdgeWorker();
     onEdgeWorkerReady(() => setEdgeWorkerReady());

the-matrix/js/payment.js

@@ -10,6 +10,7 @@
  */
 
 import { getOrRefreshToken } from './nostr-identity.js';
+import { addHistoryEntry } from './history.js';
 
 const API_BASE = '/api';
 const POLL_INTERVAL_MS = 2000;
@@ -18,6 +19,7 @@ const POLL_TIMEOUT_MS  = 60000;
 let panel = null;
 let closeBtn = null;
 let currentJobId = null;
+let currentRequest = '';
 let pollTimer = null;
 
 export function initPaymentPanel() {
@@ -96,6 +98,7 @@ async function submitJob() {
     if (!res.ok) { setError(data.error || 'Failed to create job.'); return; }
 
     currentJobId = data.jobId;
+    currentRequest = request;
     showEvalInvoice(data.evalInvoice);
   } catch (err) {
     setError('Network error: ' + err.message);
@@ -167,7 +170,7 @@ function startPolling() {
       const pollHeaders = token ? { 'X-Nostr-Token': token } : {};
       const res  = await fetch(`${API_BASE}/jobs/${currentJobId}`, { headers: pollHeaders });
       const data = await res.json();
-      const { state, workInvoice, result, reason } = data;
+      const { state, workInvoice, result, reason, costLedger, completedAt } = data;
 
       if (state === 'awaiting_work_payment' && workInvoice) {
         showWorkInvoice(workInvoice);
@@ -175,10 +178,26 @@ function startPolling() {
         return;
       }
       if (state === 'complete') {
+        addHistoryEntry({
+          jobId: currentJobId,
+          request: currentRequest,
+          costSats: costLedger?.workAmountSats ?? costLedger?.actualAmountSats ?? 0,
+          result,
+          state: 'complete',
+          completedAt: completedAt ?? new Date().toISOString(),
+        });
         showResult(result, 'complete');
         return;
       }
       if (state === 'rejected') {
+        addHistoryEntry({
+          jobId: currentJobId,
+          request: currentRequest,
+          costSats: 0,
+          result: reason,
+          state: 'rejected',
+          completedAt: completedAt ?? new Date().toISOString(),
+        });
         showResult(reason, 'rejected');
         return;
       }

the-matrix/js/session.js

@@ -16,6 +16,7 @@ import { setSpeechBubble, setMood } from './agents.js';
 import { appendSystemMessage, setSessionSendHandler, setInputBarSessionMode } from './ui.js';
 import { getOrRefreshToken } from './nostr-identity.js';
 import { sentiment } from './edge-worker-client.js';
+import { addHistoryEntry } from './history.js';
 
 const API          = '/api';
 const LS_KEY       = 'timmy_session_v1';
@@ -152,12 +153,21 @@ export async function sessionSendHandler(text) {
       return;
     }
 
+    const prevBalance = _balanceSats;
     _balanceSats  = data.balanceRemaining ?? 0;
     _sessionState = _balanceSats < MIN_BALANCE ? 'paused' : 'active';
     _saveToStorage();
     _applySessionUI();
 
     const reply = data.result || data.reason || '…';
+    const costSats = Math.max(0, prevBalance - _balanceSats);
+    addHistoryEntry({
+      request: text,
+      costSats,
+      result: reply,
+      state: data.reason && !data.result ? 'rejected' : 'complete',
+      completedAt: new Date().toISOString(),
+    });
     setSpeechBubble(reply);
     appendSystemMessage('Timmy: ' + reply.slice(0, 80));