# Validation Fixes Session Summary - 2026-05-21

## Context

This session implemented the first pass from `docs/planning/2026-05-21-validation-fixes-implementation-plan.md`.
The goal was to start closing the feature-validation gaps found while comparing `origin/main` behavior against the PRD.

## Work Completed

### 1. Release Test Contract Restored

Updated `tests/pipeline_integration_tests.rs` so the project-structure pipeline test matches the current backend contract:

- Backend `CodeElement.element_type` for folders is canonicalized as `directory`.
- Parent-child relationships are asserted for repository root, nested directories, and files.
- The test now validates both element count and structural hierarchy.

### 2. UI Lint And Type Fixes

Updated UI code to satisfy strict linting and type checks:

- `ui/src/App.tsx`
- `ui/src/components/CodeViewer.tsx`
- `ui/src/components/FileDetailPanel.tsx`
- `ui/src/hooks/useSigma.ts`

Key fixes:

- Stabilized React hook dependency order.
- Removed avoidable `any` casts around syntax-highlighter and Sigma usage.
- Reworked file-content loading state so stale async responses do not overwrite the current selection.
- Typed the Sigma browser debug handle as `window.sig`.

### 3. Playwright E2E Startup And Test Alignment

Updated Playwright configuration and tests:

- `ui/playwright.config.ts`
- `ui/tests/click-behavior.spec.ts`
- `ui/tests/hierarchy.spec.ts`
- `ui/tests/service-navigation.spec.ts`

Key fixes:

- Playwright now starts Vite on `127.0.0.1:5173`.
- Tests use `PLAYWRIGHT_BASE_URL` when provided, otherwise default to the Vite dev URL.
- Current single-repo graph behavior is reflected in the tests.
- Click-behavior tests now assert graph stability instead of relying on old internal highlight assumptions.

### 4. PRD Alignment

Updated `docs/prd.md` to reflect current validation status:

- Version references were aligned to `0.17.0`.
- Dart and XML support were marked as partial where extractor coverage exists but full parity is not signed off.
- The folder graph contract now documents that backend data uses `directory`, while the UI may present this as `Folder`.

### 5. Dependency Audit

Ran `npm audit fix` in `ui/`.

- `ui/package-lock.json` was updated.
- The previous moderate `brace-expansion` advisory is cleared.

## Verification Evidence

Commands run successfully:

```bash
cargo test --release test_pipeline_project_structure
cargo test --release --test pipeline_integration_tests
cargo test --release
cd ui && npm run lint
cd ui && npm run build
cd ui && npm run test:e2e
cd ui && npm audit --audit-level=moderate
```

Results:

- Rust release suite passed.
- Pipeline integration tests passed.
- UI lint passed.
- UI production build passed.
- Playwright E2E passed: 15/15 tests.
- npm audit passed with 0 vulnerabilities.

## Remaining Notes

- `npm run build` still reports a Vite chunk-size warning for the main JavaScript bundle. This does not fail the build, but code splitting should be considered separately.
- Existing Rust compiler warnings remain in unrelated test code.
- The worktree had pre-existing unrelated dirty and untracked files before this implementation pass. They were not reverted.

## Files Changed By This Pass

- `docs/prd.md`
- `tests/pipeline_integration_tests.rs`
- `ui/package-lock.json`
- `ui/playwright.config.ts`
- `ui/src/App.tsx`
- `ui/src/components/CodeViewer.tsx`
- `ui/src/components/FileDetailPanel.tsx`
- `ui/src/hooks/useSigma.ts`
- `ui/tests/click-behavior.spec.ts`
- `ui/tests/hierarchy.spec.ts`
- `ui/tests/service-navigation.spec.ts`

