> 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-session04-reusable-3d-code-graph-renderer/implementation-notes.md). # Implementation Notes **Session ID**: `phase26-session04-reusable-3d-code-graph-renderer` **Started**: 2026-06-09 14:51 **Last Updated**: 2026-06-09 15:10 *** ## Session Progress | Metric | Value | | ------------------- | --------- | | Tasks Completed | 19 / 19 | | Estimated Remaining | 0 minutes | | Blockers | 0 | *** ## Task Log ### 2026-06-09 - Session Start **Environment verified**: * [x] Prerequisites confirmed * [x] Tools available * [x] Directory structure ready *** ### Task T001 - Verify prerequisites and renderer references **Started**: 2026-06-09 14:49 **Completed**: 2026-06-09 14:51 **Duration**: 2 minutes **Notes**: * Ran `.spec_system/scripts/analyze-project.sh --json`; current session resolved to `phase26-session04-reusable-3d-code-graph-renderer`. * Ran `.spec_system/scripts/check-prereqs.sh --json --env`; spec system, jq, and git passed. * Ran `.spec_system/scripts/check-prereqs.sh --json --tools bun,git,jq`; Bun 1.3.14 and required shell tools passed. * Reviewed the session spec, task checklist, project conventions, Memory Graph lifecycle, graph helper types, Knowledge Graph contracts, seed/demo fixtures, upstream Graphify renderer, loader tests, and mocked WebGL component test patterns. * Noted unrelated dirty worktree changes and kept this session scoped to the current spec files and required renderer/test files. **Files Changed**: * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/implementation-notes.md` - Created progress log for the session. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T001 complete. **BQC Fixes**: * N/A - setup verification only. *** ### Task T002 - Create Knowledge Graph directories **Started**: 2026-06-09 14:52 **Completed**: 2026-06-09 14:52 **Duration**: 1 minute **Notes**: * Created `src/components/knowledge-graph/__tests__/` for the reusable renderer, loader, and local component tests. * Kept the directory route-agnostic so Session 05 can mount the renderer without route-specific state in this session. **Files Changed**: * `src/components/knowledge-graph/` - Created component directory. * `src/components/knowledge-graph/__tests__/` - Created local test directory. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T002 complete. **BQC Fixes**: * N/A - directory setup only. *** ### Task T003 - Identify targeted test command and WebGL mocks **Started**: 2026-06-09 14:52 **Completed**: 2026-06-09 14:52 **Duration**: 1 minute **Notes**: * Targeted component command identified as `bunx vitest run src/components/knowledge-graph/__tests__/knowledge-graph-loader.test.tsx src/components/knowledge-graph/__tests__/knowledge-graph-3d.test.tsx`. * Vendor mocks needed: `react-force-graph-3d` forwardRef canvas mock exposing force, control, scene, composer, graphData, and callback props; `three` geometry/material/object constructors; bloom pass mock with `setSize` and `dispose`. * Browser lifecycle mocks needed: `ResizeObserver`, `requestAnimationFrame`, `cancelAnimationFrame`, and `matchMedia`. **Files Changed**: * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T003 complete. **BQC Fixes**: * Failure path completeness: Vendor import and browser lifecycle failure states were identified as required test coverage before implementation started. *** ### Task T004 - Extend force-graph helper types **Started**: 2026-06-09 14:53 **Completed**: 2026-06-09 14:54 **Duration**: 1 minute **Notes**: * Added generic `ForceGraphEndpoint` and `resolveEndpointId` helpers so string endpoints and force-graph runtime node objects normalize through one typed boundary. * Kept `resolveNodeId` as a compatibility wrapper for Memory Graph consumers. * Extended `ForceGraphRef` to cover optional `graphData`, camera look-at transitions, custom force registration, control distance clamps, and scene removal used by 3D lifecycle cleanup. **Files Changed**: * `src/lib/graph-types.ts` - Added generic endpoint helpers and widened force-graph ref boundary. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T004 complete. **BQC Fixes**: * Contract alignment: Runtime-mutated force-graph endpoints now normalize through a typed helper instead of duplicated string/object checks. *** ### Task T005 - Create Knowledge Graph loader shell **Started**: 2026-06-09 14:55 **Completed**: 2026-06-09 14:57 **Duration**: 2 minutes **Notes**: * Added a route-agnostic `KnowledgeGraphLoader` with fixed height handling, deterministic SVG graph/star elements, visible status text, and an accessible `role="status"` label. * Added CSS animation names scoped to the loader plus a `prefers-reduced-motion` media rule that collapses animation duration and iteration count. * Supported embedded mode by bounding the loader height for compact preview surfaces. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-loader.tsx` - Added reusable Knowledge Graph loader shell. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T005 complete. **BQC Fixes**: * Accessibility and platform compliance: Loader exposes a status role and stable visible text for assistive technology. * Resource cleanup: Loader uses no timers or animation frames. *** ### Task T006 - Create typed renderer props and view-model helpers **Started**: 2026-06-09 14:57 **Completed**: 2026-06-09 15:00 **Duration**: 3 minutes **Notes**: * Added `KnowledgeGraph3DProps`, `KnowledgeGraph3DMeta`, `KnowledgeGraphViewNode`, `KnowledgeGraphViewLink`, and `KnowledgeGraphDensity`. * Added Knowledge Graph color palette, endpoint normalization, confidence labels/colors, source path shortening, and HTML escaping for graph labels. * Kept the renderer API props-only and route-agnostic: `graph`, `embedded`, `maxNodes`, `onSelect`, `onMeta`, and `pinnedId`. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added renderer type surface and local helpers. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T006 complete. **BQC Fixes**: * Contract alignment: Renderer props and callback payloads align with the `KnowledgeGraph` contract and normalize runtime endpoints at the renderer boundary. * Error information boundaries: HTML labels escape contract strings before injecting tooltip markup. *** ### Task T007 - Implement graph projection and capping **Started**: 2026-06-09 14:58 **Completed**: 2026-06-09 15:00 **Duration**: 2 minutes **Notes**: * Added `buildKnowledgeGraphProjection` to calculate degree counts, rank nodes deterministically, cap by `maxNodes`, and filter links to kept endpoints. * Added Core density behavior that keeps high-degree load-bearing nodes and falls back to a bounded core when degree filtering would empty the view. * Added god-node marking from the top six projected nodes and summary data for `onMeta`. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added pure projection, density, capping, and god-node behavior. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T007 complete. **BQC Fixes**: * Failure path completeness: Core density cannot collapse to a blank graph when degree filtering removes all candidates. * Concurrency safety: Projection is pure and does not mutate the contract graph input. *** ### Task T008 - Implement adjacency and active highlight helpers **Started**: 2026-06-09 14:59 **Completed**: 2026-06-09 15:00 **Duration**: 1 minute **Notes**: * Added `buildKnowledgeGraphAdjacency` and `isKnowledgeGraphNodeLit` for hover/pinned node lighting. * Link and node highlight decisions use normalized endpoint ids so string endpoints and runtime node objects behave the same. * Confidence labels/colors use exhaustive handling over the declared confidence enum. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added adjacency and active highlight helpers. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T008 complete. **BQC Fixes**: * State freshness on re-entry: Material maps and highlight refs reset whenever projected graph data changes. * Contract alignment: Exhaustive confidence handling prevents silent styling drift for new enum values. *** ### Task T009 - Implement lazy dynamic imports and graph states **Started**: 2026-06-09 15:00 **Completed**: 2026-06-09 15:01 **Duration**: 1 minute **Notes**: * Added dynamic imports for `react-force-graph-3d`, `three`, and bloom inside a client effect, with cancellation on cleanup. * Added explicit loading, empty graph, error, and offline state surfaces before the force graph canvas is available. * Kept heavy 3D vendors out of runtime top-level imports. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added lazy module loading and state blocks. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T009 complete. **BQC Fixes**: * Failure path completeness: Module load failure and offline-before-load states show explicit UI instead of a blank canvas. * Resource cleanup: Dynamic import effects cancel state updates after unmount. *** ### Task T010 - Implement resize and embedded-mode lifecycle **Started**: 2026-06-09 15:00 **Completed**: 2026-06-09 15:01 **Duration**: 1 minute **Notes**: * Added `ResizeObserver` sizing with fallback measurement when the browser/test environment lacks the observer. * Embedded mode disables zoom and pan controls and uses compact minimum heights. * Added wheel/pointer tracking so auto-orbit yields to manual interaction and page scrolling remains available. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added sizing, embedded controls, wheel handling, and observer cleanup. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T010 complete. **BQC Fixes**: * Resource cleanup: Resize observer disconnects on scope exit and queued graph-ready animation frames are cancelled. * State freshness on re-entry: Sizing revalidates when embedded mode changes. *** ### Task T011 - Configure scene enhancements and animation cleanup **Started**: 2026-06-09 15:00 **Completed**: 2026-06-09 15:01 **Duration**: 1 minute **Notes**: * Added fog, ambient/key/rim lights, starfield generation, bloom pass setup, and bloom resizing. * Added auto-orbit with reduced-motion disablement, pinned-node pause, and recent user-drag suspension. * Added cleanup for animation frames, scene objects, disposable Three resources, and enhancement flags. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added scene lifecycle, starfield, bloom, auto-orbit, and cleanup. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T011 complete. **BQC Fixes**: * Resource cleanup: Scene resources dispose and remove from the scene on unmount, and animation frames cancel on scope exit. * Accessibility and platform compliance: Reduced-motion preference disables auto-orbit by default. *** ### Task T012 - Implement force tuning and link behavior **Started**: 2026-06-09 15:00 **Completed**: 2026-06-09 15:01 **Duration**: 1 minute **Notes**: * Added confidence-aware link distances and bounded weight influence for extracted, inferred, and ambiguous relationships. * Added community clustering anchors that pull nodes by community without mutating the original graph contract. * Added extracted-link particles, confidence colors, curvature, and guarded reheating only after layout data is present. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added force tuning, link rules, particles, and layout reheat guard. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T012 complete. **BQC Fixes**: * Failure path completeness: Force API calls are guarded because vendor internals are unavailable during startup. * State freshness on re-entry: Reheat runs only when layout data exists and no pinned fly-to is active. *** ### Task T013 - Implement custom nodes, labels, and source fallback text **Started**: 2026-06-09 15:00 **Completed**: 2026-06-09 15:01 **Duration**: 1 minute **Notes**: * Added file-type-aware node geometries, community colors, degree-based sizing, god-node halos, and pulse markers. * Added escaped HTML labels with source path shortening and `No source path` fallback text for missing optional contract fields. * Added material tracking so hover/pinned highlighting can dim existing meshes without regenerating every node. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added custom node rendering, labels, and source fallback behavior. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T013 complete. **BQC Fixes**: * Error information boundaries: Tooltip content is escaped and missing source metadata uses stable fallback text. * State freshness on re-entry: Material tracking resets when the projected graph changes. *** ### Task T014 - Implement selection, pinned fly-to, camera fit, and meta updates **Started**: 2026-06-09 15:00 **Completed**: 2026-06-09 15:01 **Duration**: 1 minute **Notes**: * Added node click selection with a short in-flight duplicate guard to prevent repeated callbacks from rapid double clicks. * Added pinned-id fly-to with deferred execution when node coordinates are not assigned yet, plus coordinate freeze/release behavior. * Added camera fit on engine stop and `onMeta` updates for shown, total, capped, density, link count, communities, and god nodes. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added selection, pinned fly-to, camera fit, and meta callbacks. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T014 complete. **BQC Fixes**: * Duplicate action prevention: Node selection is guarded against rapid duplicate clicks for the same node. * Resource cleanup: Selection guard timeout clears on unmount. *** ### Task T015 - Implement controls, capping notice, and legend **Started**: 2026-06-09 15:00 **Completed**: 2026-06-09 15:01 **Duration**: 1 minute **Notes**: * Added keyboard-reachable Full/Core density buttons with `aria-pressed` and explicit labels. * Added Pause/Play auto-orbit button that disables under reduced motion. * Added capped-node notice and confidence/community/god-node legend for non-embedded use. **Files Changed**: * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Added controls, capped notice, and legend. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T015 complete. **BQC Fixes**: * Accessibility and platform compliance: Controls are real buttons with labels, pressed state, focus rings, and disabled state for reduced motion. *** ### Task T016 - Write loader tests **Started**: 2026-06-09 15:03 **Completed**: 2026-06-09 15:04 **Duration**: 1 minute **Notes**: * Added happy-dom loader tests for accessible status text, default/custom/embedded height behavior, deterministic SVG shell rendering, and reduced-motion CSS. * Ran `bunx vitest run src/components/knowledge-graph/__tests__/knowledge-graph-loader.test.tsx`; 6 tests passed. **Files Changed**: * `src/components/knowledge-graph/__tests__/knowledge-graph-loader.test.tsx` - Added loader component tests. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T016 complete. **BQC Fixes**: * Accessibility and platform compliance: Tests assert the loader status role and visible loading text. *** ### Task T017 - Write renderer tests **Started**: 2026-06-09 15:04 **Completed**: 2026-06-09 15:07 **Duration**: 3 minutes **Notes**: * Added happy-dom renderer tests with mocked `react-force-graph-3d`, `three`, bloom pass, `ResizeObserver`, `requestAnimationFrame`, and `matchMedia`. * Covered projection/capping/core density helpers, runtime endpoint adjacency, loading-to-graph render, meta callback, density control, capping notice, escaped labels, hover highlighting, duplicate selection guard, pinned fly-to, embedded mode, and cleanup. * Ran `bunx vitest run src/components/knowledge-graph/__tests__/knowledge-graph-3d.test.tsx`; 9 tests passed. **Files Changed**: * `src/components/knowledge-graph/__tests__/knowledge-graph-3d.test.tsx` - Added renderer component and helper tests. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T017 complete. **BQC Fixes**: * Resource cleanup: Tests assert observer disconnect, animation frame cancellation, scene removal, and bloom disposal. * Duplicate action prevention: Tests assert duplicate node clicks do not emit repeated selection callbacks. * Contract alignment: Tests assert runtime endpoint object normalization for adjacency. *** ### Task T018 - Run targeted tests, typecheck, and import scan **Started**: 2026-06-09 15:07 **Completed**: 2026-06-09 15:09 **Duration**: 2 minutes **Notes**: * Ran `bunx vitest run src/components/knowledge-graph/__tests__/knowledge-graph-loader.test.tsx src/components/knowledge-graph/__tests__/knowledge-graph-3d.test.tsx`; 15 tests passed across 2 files. * Ran `bun run typecheck`; TypeScript passed. * Ran a top-level runtime vendor import scan for `from "react-force-graph-3d"`, `from "three"`, and `from "three/examples/jsm/postprocessing/UnrealBloomPass.js"` across touched code files; no matches were found. **Files Changed**: * `src/components/knowledge-graph/__tests__/knowledge-graph-3d.test.tsx` - Tightened mock call typing found by typecheck. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T018 complete. **BQC Fixes**: * Contract alignment: Typecheck caught and fixed an unsafe mock-call destructure in the renderer test. *** ### Task T019 - Validate ASCII and update final verification notes **Started**: 2026-06-09 15:09 **Completed**: 2026-06-09 15:10 **Duration**: 1 minute **Notes**: * Ran `bunx prettier --write src/lib/graph-types.ts src/components/knowledge-graph/knowledge-graph-loader.tsx src/components/knowledge-graph/knowledge-graph-3d.tsx src/components/knowledge-graph/__tests__/knowledge-graph-loader.test.tsx src/components/knowledge-graph/__tests__/knowledge-graph-3d.test.tsx`. * Re-ran `bunx vitest run src/components/knowledge-graph/__tests__/knowledge-graph-loader.test.tsx src/components/knowledge-graph/__tests__/knowledge-graph-3d.test.tsx`; 15 tests passed across 2 files. * Re-ran `bun run typecheck`; TypeScript passed. * Ran ASCII scan across touched code and session files; no non-ASCII characters were found. * Re-ran the top-level runtime vendor import scan; no matches were found. **Files Changed**: * `src/lib/graph-types.ts` - Formatted final helper type changes. * `src/components/knowledge-graph/knowledge-graph-loader.tsx` - Formatted final loader implementation. * `src/components/knowledge-graph/knowledge-graph-3d.tsx` - Formatted final renderer implementation. * `src/components/knowledge-graph/__tests__/knowledge-graph-loader.test.tsx` - Verified loader tests. * `src/components/knowledge-graph/__tests__/knowledge-graph-3d.test.tsx` - Formatted and verified renderer tests. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/tasks.md` - Marked T019 and completion checklist complete. * `.spec_system/specs/phase26-session04-reusable-3d-code-graph-renderer/implementation-notes.md` - Added final verification results. **BQC Fixes**: * N/A - final verification only. *** ## Final Verification | Check | Result | | ----------------------------- | ---------------------------------------- | | Targeted component tests | Pass - 15 tests across 2 files | | Typecheck | Pass - `bun run typecheck` | | ASCII scan | Pass - touched files only | | Runtime 3D vendor import scan | Pass - no top-level `from` imports | | Completion checklist | Pass - all session tasks marked complete | *** --- # Agent Instructions This documentation is published with GitBook. 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