perf: bound Build my Today readiness checks (Closes #637)

frontend/dashboard.js

@@ -1466,6 +1466,9 @@
   }
 
   function closePlanToday(navigate = true) {
+    planTodayReadiness.cancel();
+    qs('#build-today-plan').disabled = false;
+    qs('#plan-today-build-status').textContent = '';
     if (navigate) {
       taskOverlayHistory.close();
       return;
@@ -1514,28 +1517,30 @@
     },
   });
 
+  const planTodayReadiness = createPlanTodayReadiness({
+    concurrency:3,
+    identity:item => todayWork.identity(item),
+    inspect:async item => {
+      if (item.kind !== 'issue') return { status:'ready' };
+      const detail = await inspectTodayDependencies(item);
+      if (!detail.available) return { status:'unverified' };
+      if (detail.dependencies.length) return {
+        status:'blocked', reason:detail.dependencies.length + ' open ' +
+          (detail.dependencies.length === 1 ? 'dependency' : 'dependencies'),
+      };
+      return { status:'ready' };
+    },
+  });
+
   async function buildTodayPlan() {
     const button = qs('#build-today-plan');
     const state = planToday.snapshot();
     const candidates = state.ids.map(id => planToday.item(id)).concat(planToday.candidates());
     button.disabled = true;
     qs('#plan-today-build-status').textContent = 'Checking readiness and fitting your highest-ranked work…';
-    const checks = await Promise.all(candidates.map(async item => {
+    const checks = await planTodayReadiness.run(candidates);
-      const id = todayWork.identity(item);
+    if (!checks) return;
-      if (item.kind !== 'issue') return [id, { status:'ready' }];
+    planToday.buildRecommendation(checks);
-      try {
-        const detail = await inspectTodayDependencies(item);
-        if (!detail.available) return [id, { status:'unverified' }];
-        if (detail.dependencies.length) return [id, {
-          status:'blocked', reason:detail.dependencies.length + ' open ' +
-            (detail.dependencies.length === 1 ? 'dependency' : 'dependencies'),
-        }];
-        return [id, { status:'ready' }];
-      } catch (_error) {
-        return [id, { status:'unverified' }];
-      }
-    }));
-    planToday.buildRecommendation(Object.fromEntries(checks));
     button.disabled = false;
     renderPlanToday();
   }

frontend/index.html

@@ -907,6 +907,7 @@
 <script src="static/comment-next.js"></script>
 <script src="static/update-reply-read-next.js"></script>
 <script src="static/plan-today.js"></script>
+<script src="static/plan-today-readiness.js"></script>
 <script src="static/plan-today-preview.js"></script>
 <script src="static/today-sync.js"></script>
 <script src="static/today-rollover.js"></script>

frontend/plan-today-readiness.js

@@ -0,0 +1,41 @@
+function createPlanTodayReadiness({ identity, inspect, concurrency = 3 }) {
+  const workerCount = Math.max(1, Math.floor(Number(concurrency) || 1));
+  let generation = 0;
+
+  async function run(items) {
+    const runGeneration = ++generation;
+    const candidates = Array.from(items || []);
+    const results = new Array(candidates.length);
+    let next = 0;
+
+    async function worker() {
+      while (next < candidates.length) {
+        const index = next;
+        next += 1;
+        const item = candidates[index];
+        let result;
+        try {
+          result = await inspect(item);
+        } catch (_error) {
+          result = { status:'unverified' };
+        }
+        results[index] = [identity(item), result];
+      }
+    }
+
+    await Promise.all(Array.from(
+      { length:Math.min(workerCount, candidates.length) },
+      () => worker(),
+    ));
+    if (runGeneration !== generation) return null;
+    return Object.fromEntries(results);
+  }
+
+  function cancel() {
+    generation += 1;
+  }
+
+  return { run, cancel };
+}
+
+if (typeof module !== 'undefined' && module.exports) module.exports = createPlanTodayReadiness;

frontend/service-worker.js

@@ -1,6 +1,6 @@
 const BASE = new URL('./', self.location.href).pathname;
 importScripts(BASE + 'static/background-issue-sync.js');
-const CACHE = 'stackchain-dashboard-shell-v94';
+const CACHE = 'stackchain-dashboard-shell-v95';
 const OFFLINE_LEASE_URL = new URL(BASE + '__offline-session-lease', self.location.origin).href;
 const OUTAGE_STATUSES = new Set([500, 502, 503, 504]);
 const NAVIGATION_TIMEOUT_MS = self.__STACKCHAIN_NAVIGATION_TIMEOUT_MS || 4000;
@@ -41,6 +41,7 @@ const SHELL = [
   BASE + 'static/comment-next.js',
   BASE + 'static/update-reply-read-next.js',
   BASE + 'static/plan-today.js',
+  BASE + 'static/plan-today-readiness.js',
   BASE + 'static/plan-today-preview.js',
   BASE + 'static/today-sync.js',
   BASE + 'static/today-rollover.js',

tests/test_comment_next.py

@@ -303,4 +303,4 @@ async def test_unread_update_offers_reply_mark_read_and_next_independent_of_toda
     assert '.update-reply-actions { display:grid; grid-template-columns:repeat(2,minmax(0,1fr));' in html
     assert '.update-reply-actions button { min-height:44px;' in html
     worker = (Path(__file__).parents[1] / "frontend" / "service-worker.js").read_text()
-    assert "stackchain-dashboard-shell-v94" in worker
+    assert "stackchain-dashboard-shell-v95" in worker

tests/test_frontend_bundle.py

@@ -187,7 +187,7 @@ def test_legacy_cache_marker_is_normalized_out_of_build_identity(tmp_path):
     worker = changed_frontend / "service-worker.js"
     worker.write_text(
         worker.read_text().replace(
-            "const CACHE = 'stackchain-dashboard-shell-v94';",
+            "const CACHE = 'stackchain-dashboard-shell-v95';",
             "const CACHE = 'stackchain-dashboard-shell-v999';",
         )
     )

tests/test_later_sync.py

@@ -347,5 +347,5 @@ async def test_dashboard_syncs_every_later_change_and_exposes_account_status():
 def test_later_sync_ships_atomically_in_the_offline_shell():
     source = (Path(__file__).parents[1] / "frontend" / "service-worker.js").read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/later-sync.js'" in source

tests/test_markdown_renderer.py

@@ -137,4 +137,4 @@ def test_markdown_work_bodies_are_mobile_safe_block_containers():
     assert ".markdown-content { min-width:0; max-width:100%; overflow-wrap:anywhere;" in css
     assert ".markdown-content pre { max-width:100%; overflow-x:auto;" in css
     assert ".markdown-content a { min-height:44px;" in css
-    assert "stackchain-dashboard-shell-v94" in worker
+    assert "stackchain-dashboard-shell-v95" in worker

tests/test_mobile_composer_integration.py

@@ -41,7 +41,7 @@ def test_offline_shell_contains_every_local_dashboard_runtime_asset():
     shell_assets = set(re.findall(r"BASE \+ '([^']+)'", worker.split("async function sessionCsrf", 1)[0]))
 
     assert local_assets <= shell_assets, f"Offline shell is missing: {sorted(local_assets - shell_assets)}"
-    assert "stackchain-dashboard-shell-v94" in worker
+    assert "stackchain-dashboard-shell-v95" in worker
 
 
 def test_all_conversation_composers_offer_accessible_mobile_mentions():

tests/test_mobile_device_setup.py

@@ -186,7 +186,7 @@ def test_mobile_dashboard_mounts_phone_safe_device_setup_flow():
     assert "promptStorage:localStorage" in dashboard
     assert "pushControllerReady.then(ensureDeviceSetup)" in dashboard
     assert "BASE + 'static/mobile-device-setup.js'" in worker
-    assert "stackchain-dashboard-shell-v94" in worker
+    assert "stackchain-dashboard-shell-v95" in worker
     assert ".device-setup-panel" in css
     assert ".device-readiness-card" in css
     assert "overflow-x:hidden" in css

tests/test_plan_today.py

@@ -410,6 +410,7 @@ async def test_plan_today_wires_cancel_back_and_success_through_overlay_history(
 def test_plan_today_controller_is_available_in_the_offline_shell():
     source = SERVICE_WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/plan-today.js'" in source
+    assert "BASE + 'static/plan-today-readiness.js'" in source
     assert "BASE + 'static/plan-today-preview.js'" in source

tests/test_plan_today_readiness.py

@@ -0,0 +1,94 @@
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from tests.dashboard_bundle import dashboard
+
+
+READINESS = Path(__file__).parents[1] / "frontend" / "plan-today-readiness.js"
+
+
+def run_node(script: str) -> dict:
+    result = subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)
+    return json.loads(result.stdout)
+
+
+def test_plan_readiness_bounds_concurrency_and_preserves_ranked_order():
+    script = f"""
+const createReadiness = require({json.dumps(str(READINESS))});
+let active = 0;
+let peak = 0;
+const completed = [];
+const delays = {{1:40, 2:5, 3:20, 4:1, 5:10, 6:2}};
+const readiness = createReadiness({{
+  concurrency:3,
+  identity:item => 'issue:' + item.number,
+  inspect:async item => {{
+    active += 1;
+    peak = Math.max(peak, active);
+    await new Promise(resolve => setTimeout(resolve, delays[item.number]));
+    completed.push(item.number);
+    active -= 1;
+    return item.number === 4 ? {{status:'blocked', reason:'Waiting'}} : {{status:'ready'}};
+  }},
+}});
+readiness.run([1,2,3,4,5,6].map(number => ({{kind:'issue', number}}))).then(result => {{
+  process.stdout.write(JSON.stringify({{peak, completed, entries:Object.entries(result)}}));
+}});
+"""
+    result = run_node(script)
+    assert result["peak"] == 3
+    assert result["completed"] != [1, 2, 3, 4, 5, 6]
+    assert result["entries"] == [
+        ["issue:1", {"status": "ready"}],
+        ["issue:2", {"status": "ready"}],
+        ["issue:3", {"status": "ready"}],
+        ["issue:4", {"status": "blocked", "reason": "Waiting"}],
+        ["issue:5", {"status": "ready"}],
+        ["issue:6", {"status": "ready"}],
+    ]
+
+
+def test_plan_readiness_supersedes_stale_builds_and_normalizes_real_failures():
+    script = f"""
+const createReadiness = require({json.dumps(str(READINESS))});
+let releaseFirst;
+const firstGate = new Promise(resolve => {{ releaseFirst = resolve; }});
+const readiness = createReadiness({{
+  concurrency:2,
+  identity:item => 'issue:' + item.number,
+  inspect:async item => {{
+    if (item.number === 1) await firstGate;
+    if (item.number === 3) throw new Error('upstream details');
+    return {{status:'ready'}};
+  }},
+}});
+const stale = readiness.run([{{number:1}}, {{number:2}}]);
+const current = readiness.run([{{number:3}}, {{number:4}}]);
+current.then(currentResult => {{
+  releaseFirst();
+  stale.then(staleResult => process.stdout.write(JSON.stringify({{staleResult, currentResult}})));
+}});
+"""
+    assert run_node(script) == {
+        "staleResult": None,
+        "currentResult": {
+            "issue:3": {"status": "unverified"},
+            "issue:4": {"status": "ready"},
+        },
+    }
+
+
+@pytest.mark.anyio
+async def test_dashboard_uses_bounded_supersedable_readiness_for_build_my_today():
+    html = await dashboard()
+
+    assert '<script src="static/plan-today-readiness.js"></script>' in html
+    assert "const planTodayReadiness = createPlanTodayReadiness({" in html
+    assert "concurrency:3" in html
+    assert "const checks = await planTodayReadiness.run(candidates);" in html
+    assert "if (!checks) return;" in html
+    assert "planTodayReadiness.cancel();" in html
+    assert "Promise.all(candidates.map" not in html

tests/test_service_worker.py

@@ -145,7 +145,7 @@ async function dispatchPush(payload) {{
 def test_resumable_today_session_ships_in_a_new_offline_shell():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/my-work.js'" in source
     assert "BASE + 'static/dashboard.js'" in source
     assert "BASE + 'static/dashboard.css'" in source
@@ -154,14 +154,14 @@ def test_resumable_today_session_ships_in_a_new_offline_shell():
 def test_ownership_exit_runtime_rolls_the_offline_shell_cache():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/dashboard.js'" in source
 
 
 def test_offline_review_next_ships_today_completion_atomically():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/today-completion.js'" in source
     assert "BASE + 'static/dashboard.js'" in source
 
@@ -169,7 +169,7 @@ def test_offline_review_next_ships_today_completion_atomically():
 def test_duplicate_aware_capture_ships_in_a_new_offline_shell():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/create-issue-sheet.js'" in source
     assert "BASE + 'static/dashboard.js'" in source
 
@@ -177,14 +177,14 @@ def test_duplicate_aware_capture_ships_in_a_new_offline_shell():
 def test_exact_later_picker_ships_atomically_in_a_new_offline_shell():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/later-picker.js'" in source
 
 
 def test_navigation_deadline_ships_in_a_new_shell_cache():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/dashboard.css'" in source
     assert "BASE + 'static/dashboard.js'" in source
     assert "BASE + 'static/install-app.js'" in source
@@ -193,21 +193,21 @@ def test_navigation_deadline_ships_in_a_new_shell_cache():
 def test_today_convergence_ships_in_a_new_shell_cache():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/today-sync.js'" in source
 
 
 def test_mobile_search_viewport_ships_in_a_new_offline_shell():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/mobile-search-viewport.js'" in source
 
 
 def test_update_ownership_flow_ships_atomically_in_a_new_offline_shell():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/update-ownership.js'" in source
 
 
@@ -654,7 +654,7 @@ def test_one_session_bound_csrf_proof_is_reused_for_a_background_drain():
 def test_queue_today_ships_atomically_in_a_new_offline_shell():
     source = WORKER.read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/queue-today.js'" in source
 
 
@@ -704,6 +704,7 @@ def test_install_precaches_complete_subpath_scoped_app_shell():
         "/dashboard/static/comment-next.js",
         "/dashboard/static/update-reply-read-next.js",
         "/dashboard/static/plan-today.js",
+        "/dashboard/static/plan-today-readiness.js",
         "/dashboard/static/plan-today-preview.js",
         "/dashboard/static/today-sync.js",
         "/dashboard/static/today-rollover.js",

tests/test_today_readiness.py

@@ -221,7 +221,7 @@ async def test_today_blocker_opens_existing_preview_and_preserves_readiness_gate
 def test_readiness_runtime_is_available_in_offline_shell():
     service_worker = SERVICE_WORKER.read_text()
 
-    assert "const CACHE = 'stackchain-dashboard-shell-v94';" in service_worker
+    assert "const CACHE = 'stackchain-dashboard-shell-v95';" in service_worker
     assert "BASE + 'static/today-readiness.js'" in service_worker
 
 

tests/test_today_sync.py

@@ -127,7 +127,7 @@ sync.enqueueConfiguration(120, {{'issue:r:1:':60}});
 def test_inflight_today_drain_ships_in_a_new_offline_shell():
     source = (Path(__file__).parents[1] / "frontend" / "service-worker.js").read_text()
 
-    assert "stackchain-dashboard-shell-v94" in source
+    assert "stackchain-dashboard-shell-v95" in source
     assert "BASE + 'static/today-sync.js'" in source