> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase26-session05-read-hook-route-shell-project-gallery/implementation-notes.md). # Implementation Notes **Session ID**: `phase26-session05-read-hook-route-shell-project-gallery` **Started**: 2026-06-09 15:30 **Last Updated**: 2026-06-09 15:50 *** ## Session Progress | Metric | Value | | ------------------- | --------- | | Tasks Completed | 20 / 20 | | Estimated Remaining | 3-4 hours | | Blockers | 0 | *** ### Task T020 - Run focused checks and ASCII validation **Started**: 2026-06-09 15:48 **Completed**: 2026-06-09 15:50 **Duration**: 2 minutes **Notes**: * Ran focused tests for the hook, page/component, route, route-tree, and sidebar coverage: 5 files and 47 tests passed. * Ran `bun run typecheck`: passed. * Ran targeted ESLint on Session 05 source and test files: passed after formatting fixes. * Ran `bun run build:dev`: passed and verified route generation through normal TanStack Start/Vite tooling. * Ran ASCII scan across Session 05 text files: no non-ASCII matches. * Confirmed `thinker.webp` is 179,002 bytes, under the 200 KB media policy. The repository-wide asset-size script still reports unrelated pre-existing oversized assets. * Added `IMPLEMENTATION_SUMMARY.md`. **Files Changed**: * `.spec_system/specs/phase26-session05-read-hook-route-shell-project-gallery/IMPLEMENTATION_SUMMARY.md` - Added session summary. * `.spec_system/specs/phase26-session05-read-hook-route-shell-project-gallery/implementation-notes.md` - Recorded final checks. * `.spec_system/specs/phase26-session05-read-hook-route-shell-project-gallery/tasks.md` - Marked task and completion checklist complete. **BQC Fixes**: * Contract alignment: Final typecheck, route generation, and focused route-tree tests verify generated route contracts. * Accessibility and platform compliance: Focused tests cover keyboard-accessible controls and labelled regions. *** ### Task T019 - Write route, route-tree, and sidebar tests **Started**: 2026-06-09 15:45 **Completed**: 2026-06-09 15:47 **Duration**: 2 minutes **Notes**: * Added `/knowledge-graph` route metadata and render coverage. * Updated generated route-tree tests for `/knowledge-graph` and `KnowledgeGraphRoute`. * Updated sidebar tests for the Knowledge Graph entry, active state, href, and mobile-close behavior. **Files Changed**: * `src/routes/__tests__/knowledge-graph.test.tsx` - Added route metadata/render tests. * `src/routes/__tests__/route-tree.test.ts` - Added generated route-tree expectations. * `src/components/__tests__/app-sidebar.test.tsx` - Added sidebar Knowledge Graph coverage. **BQC Fixes**: * Contract alignment: Tests verify route metadata, route-tree registration, and sidebar route href remain aligned. * Accessibility and platform compliance: Sidebar coverage checks link role/name and active navigation behavior. *** ### Task T018 - Write page and component tests **Started**: 2026-06-09 15:44 **Completed**: 2026-06-09 15:47 **Duration**: 3 minutes **Notes**: * Added page/component tests with mocked hook state and mocked 3D renderer. * Covered loaded page sections, gallery selection, demo/empty/offline/error fallback states, selected-node details, clear action, and renderer callback forwarding. **Files Changed**: * `src/components/knowledge-graph/__tests__/knowledge-graph-page.test.tsx` - Added page/component integration tests. **BQC Fixes**: * Accessibility and platform compliance: Tests query labelled page regions, gallery controls, and clear-selection controls through accessible roles/labels. * Contract alignment: Tests verify renderer callback payloads are forwarded through the page layer. *** ### Task T017 - Write hook tests **Started**: 2026-06-09 15:43 **Completed**: 2026-06-09 15:47 **Duration**: 4 minutes **Notes**: * Added hook tests for live loaded data, empty fallback, offline fallback, fetch-error fallback, malformed graph fallback, active project selection/reset, polling interval exposure, and Hermes status projection. * Mocked the Hermes hook to keep tests focused on Knowledge Graph behavior. **Files Changed**: * `src/hooks/__tests__/use-knowledge-graph.test.tsx` - Added focused hook tests. **BQC Fixes**: * Failure path completeness: Tests assert offline, empty, fetch-error, and malformed-payload fallbacks remain explicit. * State freshness on re-entry: Tests assert active project selection resets when polling removes the selected project. *** ### Task T016 - Regenerate and verify route tree **Started**: 2026-06-09 15:50 **Completed**: 2026-06-09 15:53 **Duration**: 3 minutes **Notes**: * Regenerated route registration for `/knowledge-graph` through TanStack route tooling. * Ran `bun run build:dev` so the normal TanStack Start Vite plugin verified and restored the Start route-tree footer. * Confirmed `src/routeTree.gen.ts` contains `/knowledge-graph`, `KnowledgeGraphRoute`, and the TanStack Start `Register` declaration. **Files Changed**: * `src/routeTree.gen.ts` - Regenerated route tree with Knowledge Graph route registration. **BQC Fixes**: * Contract alignment: Generated route types now include `/knowledge-graph`, allowing TanStack route typing and build checks to pass. *** ### Task T015 - Add sidebar Knowledge Graph entry **Started**: 2026-06-09 15:49 **Completed**: 2026-06-09 15:50 **Duration**: 1 minute **Notes**: * Added the `Waypoints` icon import. * Added "Knowledge Graph" to the host cockpit navigation list at `/knowledge-graph`. * Reused existing active-link and mobile-close behavior from the sidebar route change effect. **Files Changed**: * `src/components/app-sidebar.tsx` - Added Knowledge Graph navigation entry. **BQC Fixes**: * Accessibility and platform compliance: The entry uses the existing keyboard-accessible TanStack `Link` nav pattern. *** ### Task T014 - Wire page to hook and callbacks **Started**: 2026-06-09 15:38 **Completed**: 2026-06-09 15:49 **Duration**: 11 minutes **Notes**: * Wired `KnowledgeGraphPage` to `useKnowledgeGraph`. * Connected gallery selection through the hook's validated project setter. * Connected renderer selected-node callbacks and renderer metadata into the side rail. * Route re-entry revalidation is handled by hook queries with `refetchOnMount`. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-page.tsx` - Wired page composition to hook state and renderer metadata. * `src/components/knowledge-graph/knowledge-graph-panel.tsx` - Wired selected-node and renderer metadata callbacks. * `src/components/knowledge-graph/knowledge-graph-project-gallery.tsx` - Wired active project selection. * `src/components/knowledge-graph/knowledge-graph-side-rail.tsx` - Wired selected-node details and clear action. **BQC Fixes**: * State freshness on re-entry: Active project and selected-node state are revalidated by the hook on registry/graph changes. * Contract alignment: Page-level callbacks pass typed renderer nodes and metadata to typed hook/rail consumers. *** ### Task T013 - Build side rail **Started**: 2026-06-09 15:38 **Completed**: 2026-06-09 15:48 **Duration**: 10 minutes **Notes**: * Added graph stats, confidence mix, important files, savings, provenance, Hermes status, and selected-node detail sections. * Important files can select a matching graph node when an id is available. * Long paths and labels use truncation or break-all treatment to avoid rail overflow. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-side-rail.tsx` - Added side rail details. **BQC Fixes**: * Accessibility and platform compliance: Important file and clear-selection controls are native buttons with explicit labels. * Contract alignment: Side rail receives typed hook view data and typed renderer metadata. *** ### Task T012 - Build graph panel **Started**: 2026-06-09 15:38 **Completed**: 2026-06-09 15:47 **Duration**: 9 minutes **Notes**: * Added the graph panel with a lazy import boundary around the Session 04 `KnowledgeGraph3D` renderer. * Preserved the loader fallback and selected-node callback wiring. * Added explicit state shell copy for loading, empty, error, offline, and demo graph states. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-panel.tsx` - Added renderer mount and graph state shell. **BQC Fixes**: * Resource cleanup: Renderer vendor loading remains behind the existing lazy/dynamic renderer path. * Failure path completeness: Panel renders explicit route-state information instead of blank WebGL/loading surfaces. *** ### Task T011 - Build project gallery **Started**: 2026-06-09 15:38 **Completed**: 2026-06-09 15:46 **Duration**: 8 minutes **Notes**: * Built a horizontally scrollable project gallery from the hook's deterministic project order. * Used native buttons with `aria-pressed` and explicit labels for keyboard and assistive technology support. * Added active state, project metrics, language chips, and status copy for polling/fallback states. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-project-gallery.tsx` - Added project gallery component. **BQC Fixes**: * Accessibility and platform compliance: Project cards are keyboard-selectable native buttons with labels and active state. * State freshness on re-entry: Gallery selection delegates to the hook, which validates selection against the current registry. *** ### Task T010 - Build wired hero header **Started**: 2026-06-09 15:38 **Completed**: 2026-06-09 15:45 **Duration**: 7 minutes **Notes**: * Built the Knowledge Graph hero around `thinker.webp`, scoped `kg-*` visual classes, active project summary, provenance timestamp, and explicit route state copy. * Added state-specific icons for live, loading/fallback, offline, error, empty, and demo contexts. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-hero.tsx` - Added wired hero header. **BQC Fixes**: * Accessibility and platform compliance: The hero has a labelled section, descriptive image alt text, and reduced-motion-safe animation classes. * Failure path completeness: Route state copy surfaces fallback, offline, empty, error, and demo contexts directly in the hero. *** ### Task T009 - Add scoped KG hero CSS **Started**: 2026-06-09 15:38 **Completed**: 2026-06-09 15:44 **Duration**: 6 minutes **Notes**: * Added scoped `kg-*` aurora, statue, constellation, and twinkle animation classes. * Added reduced-motion media rules that disable all new Knowledge Graph hero animations. **Files Changed**: * `src/styles.css` - Added scoped Knowledge Graph hero animation rules. **BQC Fixes**: * Accessibility and platform compliance: Reduced-motion users do not receive looping hero animations. *** ### Task T008 - Create page adapter layout skeleton **Started**: 2026-06-09 15:37 **Completed**: 2026-06-09 15:43 **Duration**: 6 minutes **Notes**: * Added `KnowledgeGraphPage` as the dedicated page adapter. * Composed stable responsive slots for hero, project gallery, graph panel, and side rail. * Kept renderer metadata at the page boundary so the graph panel can report render caps without coupling the hook to renderer internals. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-page.tsx` - Added page adapter and responsive layout. **BQC Fixes**: * State freshness on re-entry: The page remounts through the hook and relies on query refetch-on-mount behavior. * Contract alignment: Renderer metadata stays typed through the Session 04 `KnowledgeGraph3DMeta` contract. *** ### Task T007 - Create thin Knowledge Graph route **Started**: 2026-06-09 15:37 **Completed**: 2026-06-09 15:42 **Duration**: 5 minutes **Notes**: * Added `src/routes/knowledge-graph.tsx` with route metadata and a direct page adapter import. * Left generated route-tree registration for the normal TanStack generation task. **Files Changed**: * `src/routes/knowledge-graph.tsx` - Added thin `/knowledge-graph` TanStack route. **BQC Fixes**: * Contract alignment: Route owns only metadata and component mount; page behavior remains in the dedicated adapter. *** ### Task T006 - Implement fallback, offline, derived stats, and Hermes projection **Started**: 2026-06-09 15:35 **Completed**: 2026-06-09 15:41 **Duration**: 6 minutes **Notes**: * Added bundled seed fallback from `src/data/graphs/`. * Added demo fixture fallback when demo mode is requested. * Added explicit offline, empty, error, and fallback view states. * Added god-node, important-file, confidence, graph summary, and savings derivations. * Projected existing Hermes hook status and mode into the Knowledge Graph hook result without adding write paths. **Files Changed**: * `src/hooks/use-knowledge-graph.ts` - Added fallback state composition and derived Knowledge Graph/Hermes projections. **BQC Fixes**: * Failure path completeness: Empty, offline, parser-error, fetch-error, and demo contexts produce explicit view states with usable fallback data. * Contract alignment: Derived values are computed from parsed graph contracts and existing Hermes query view contracts. *** ### Task T005 - Implement polling, selection, graph loading, and stale reset **Started**: 2026-06-09 15:34 **Completed**: 2026-06-09 15:40 **Duration**: 6 minutes **Notes**: * Added 8 second registry polling when browser, online, enabled, and not demo. * Added active project reconciliation against the latest registry with fallback to the first available project. * Added active graph loading through `/__graphify_graph?id=...`. * Reset selected nodes when the active project changes or the current graph no longer contains the selected node. * React Query abort signals own request cleanup on scope exit and route re-entry. **Files Changed**: * `src/hooks/use-knowledge-graph.ts` - Added polling, selection reconciliation, graph query, and stale selected-node reset. **BQC Fixes**: * Resource cleanup: Query fetches receive AbortSignals, and selected state is reset on active graph lifecycle changes. * State freshness on re-entry: Queries refetch on mount and stale selections are reconciled against current registry and graph nodes. *** ### Task T004 - Create read hook contract and query helpers **Started**: 2026-06-09 15:32 **Completed**: 2026-06-09 15:39 **Duration**: 7 minutes **Notes**: * Added the `useKnowledgeGraph` contract with explicit view states for live, loading, empty, offline, error, idle, and demo contexts. * Added parser-backed JSON fetch helpers for `/__graphify_list` and `/__graphify_graph`. * Mapped fetch, HTTP, malformed JSON, and parser errors to stable UI-safe messages. **Files Changed**: * `src/hooks/use-knowledge-graph.ts` - Added typed read hook contract, query helpers, and error mapping. **BQC Fixes**: * Trust boundary enforcement: Bridge responses are parsed with existing Knowledge Graph parser functions before entering view state. * Error information boundaries: UI-facing errors expose stable endpoint failure details without stacks or internal paths. *** ### Task T003 - Confirm route generation command behavior **Started**: 2026-06-09 15:29 **Completed**: 2026-06-09 15:30 **Duration**: 1 minute **Notes**: * Confirmed `tanstackStart({ router: { routeFileIgnorePattern: "__tests__" } })` owns route-tree generation in `vite.config.ts`. * Ran the local TanStack `Generator` with the same ignore pattern before adding a route. * Verified the generated route tree path is `src/routeTree.gen.ts` and no pre-route route-tree diff was produced. **Files Changed**: * None. **BQC Fixes**: * N/A - tooling verification task only. *** ### Task T002 - Copy and size-check thinker hero asset **Started**: 2026-06-09 15:30 **Completed**: 2026-06-09 15:31 **Duration**: 1 minute **Notes**: * Copied the upstream `thinker.webp` reference asset into the AI OS asset tree. * Confirmed the copied asset is 179,002 bytes, below the 200 KB committed asset policy. * Ran `bash scripts/check-asset-sizes.sh`; it failed on existing unrelated oversized assets already present in `src/assets`, not on the new Knowledge Graph asset. **Files Changed**: * `src/assets/hermes-art/knowledge-graph/thinker.webp` - Added Knowledge Graph hero asset. **BQC Fixes**: * N/A - static asset task only. *** ## Task Log ### 2026-06-09 - Session Start **Environment verified**: * [x] Prerequisites confirmed * [x] Tools available * [x] Directory structure ready *** ### Task T001 - Verify prerequisite sessions and current Session 05 scope **Started**: 2026-06-09 15:27 **Completed**: 2026-06-09 15:30 **Duration**: 3 minutes **Notes**: * Confirmed the active session from `.spec_system/scripts/analyze-project.sh --json`. * Confirmed environment prerequisites with `.spec_system/scripts/check-prereqs.sh --json --env`. * Verified Session 05 PRD scope, graph read bridge endpoint exports, Vite bridge registration, shared query keys, and Session 04 renderer exports. * Confirmed TanStack route generation writes to `src/routeTree.gen.ts` and produced no pre-route diff. **Files Changed**: * `.spec_system/specs/phase26-session05-read-hook-route-shell-project-gallery/implementation-notes.md` - Initialized session implementation log. **BQC Fixes**: * N/A - 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