feat: Added video_filename field to KeyMomentSummary schema and populat…

- "backend/schemas.py"
- "backend/routers/techniques.py"

GSD-Task: S03/T01
This commit is contained in:
jlightner 2026-03-30 06:50:01 +00:00
parent c575e76861
commit 0c4162a777
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| D014 | M001/S05 | requirement | R014 Creator Equity status | validated | CreatorsBrowse.tsx defaults to sort=random. Backend uses func.random() ORDER BY for randomized sort. Integration test verifies random sort returns all creators (order may vary). All creators get equal visual weight in the UI — no featured/highlighted treatment. Equal-weight row layout confirmed in CSS. | Yes | agent |
| D015 | M002/S01 | architecture | Docker network subnet for Chrysopedia on ub01 | 172.32.0.0/24 — free on ub01, replaces 172.24.0.0/24 which is used by xpltd_docs_default | 172.24.0.0/24 was already allocated to xpltd_docs_default network on ub01. Scanned all existing subnets and 172.32.0.0/24 was the first unoccupied /24 in the 172.x range. | Yes | agent |
| D016 | M002/S01 | architecture | Embedding service for the pipeline and search — OpenWebUI doesn't serve /v1/embeddings | Add Ollama container (ollama/ollama:latest) to the compose stack running nomic-embed-text on CPU | The FYN OpenWebUI instance at chat.forgetyour.name returns 404/500 on /v1/embeddings. No Ollama instance exists on the network. Ollama provides the standard OpenAI-compatible /v1/embeddings endpoint that both EmbeddingClient and SearchService expect. | Yes | agent |
| D017 | | frontend | CSS theming approach for dark mode | 77 semantic CSS custom properties in :root block, all hardcoded colors replaced with var(--*) references | A complete variable-based palette enables theme switching, ensures consistency, and makes future color changes single-point edits. 77 tokens (vs ~30 initially planned) were needed to cover all semantic contexts — badges, buttons, surfaces, text, accents, shadows, and status states. Cyan (#22d3ee) replaces indigo as the accent color throughout. | Yes | agent |

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| ID | Slice | Risk | Depends | Done | After this |
|----|-------|------|---------|------|------------|
| S01 | Fix API Bugs — Review Detail 422 + Creators Page | low | — | ✅ | Review detail page and creators page load without errors using real pipeline data |
| S02 | Dark Theme + Cyan Accents + Mobile Responsive Fix | medium | — | | App uses dark theme with cyan accents, no horizontal scroll on mobile |
| S02 | Dark Theme + Cyan Accents + Mobile Responsive Fix | medium | — | | App uses dark theme with cyan accents, no horizontal scroll on mobile |
| S03 | Technique Page Redesign + Video Source on Moments | medium | S01 | ⬜ | Technique page matches reference HTML layout with video source on key moments, signal chain blocks, and proper section structure |
| S04 | Article Versioning + Pipeline Tuning Metadata | high | S03 | ⬜ | Technique pages track version history with pipeline metadata; API returns version list |

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---
id: S02
parent: M004
milestone: M004
provides:
- Dark theme CSS custom property system (77 tokens) for downstream slices to consume
- Mobile-safe responsive layout baseline
requires:
[]
affects:
- S03
- S04
key_files:
- frontend/src/App.css
- frontend/index.html
key_decisions:
- 77 semantic CSS custom properties in :root (vs ~30 planned) to fully eliminate all hardcoded colors
- Cyan #22d3ee replaces indigo #6366f1 as the accent color throughout the UI
- Dark-tinted badge backgrounds for readable status badges on dark theme
- overflow-x:hidden on html,body as global mobile overflow safety net
- mode-toggle label uses overflow:hidden + text-overflow:ellipsis for controlled truncation on mobile
patterns_established:
- All colors in App.css use var(--*) references — any future CSS must use existing tokens or define new ones in the :root block, never hardcode hex/rgba values
- Mobile overflow prevention: html,body overflow-x:hidden as global safety net, plus targeted flex-wrap/overflow:hidden on components that use white-space:nowrap
observability_surfaces:
- none
drill_down_paths:
- .gsd/milestones/M004/slices/S02/tasks/T01-SUMMARY.md
- .gsd/milestones/M004/slices/S02/tasks/T02-SUMMARY.md
duration: ""
verification_result: passed
completed_at: 2026-03-30T06:42:29.412Z
blocker_discovered: false
---
# S02: Dark Theme + Cyan Accents + Mobile Responsive Fix
**Replaced all 193 hex colors and 24 rgba values in App.css with 77 CSS custom properties establishing a dark theme with cyan accents, fixed mobile horizontal overflow, and updated HTML metadata.**
## What Happened
This slice converted the entire Chrysopedia frontend from hardcoded colors to a semantic CSS custom property system and fixed mobile responsive issues.
**T01 — CSS Custom Properties + Dark Theme:** Audited all ~1770 lines of App.css, identified 193 hex color references and 24 rgba values, and replaced every one with `var(--*)` references. Defined 77 semantic tokens in a `:root` block covering: page/surface/input backgrounds, primary/secondary/muted text, borders, cyan accent (replacing indigo throughout), status badge variants (pending/approved/edited/rejected with dark-appropriate tints), button states, shadows, overlays, header/transcript backgrounds, error states, and active tab/filter indicators. The token count grew from the planned ~30 to 77 because full coverage of the existing design required finer semantic distinctions — e.g., separate hover, focus, and subtle variants for the accent color, distinct badge background/text pairs for dark readability, and separate shadow weights for cards vs dialogs.
**T02 — Mobile Responsive + HTML Metadata:** Added `overflow-x: hidden` to `html, body` as a global safety net against horizontal scroll. Fixed three specific overflow sources: mode-toggle label (added `overflow: hidden; text-overflow: ellipsis; max-width: 6rem`), creator-row stats (added `flex-wrap: wrap` in the 640px media query), and app-header__right (added `flex-wrap: wrap`). Updated index.html title from "Chrysopedia Admin" to "Chrysopedia" and added `<meta name="theme-color" content="#0a0a12">` for mobile browser chrome coloring. Deployed to ub01 and visually verified at desktop (1280×800) and mobile (390×844) viewports — dark theme renders correctly, no horizontal scrollbar on any tested page.
## Verification
All slice-level verification checks pass:
- `npm run build` exits 0 (clean build, no warnings)
- Hex colors outside `:root` block: 0 (all 77 hex values are inside `:root` definitions only)
- CSS `var(--` references: 217 (exceeds 190+ threshold)
- `rgba()` outside `:root` block: 0
- `overflow-x` rule present in App.css
- `<title>Chrysopedia</title>` confirmed in index.html
- `<meta name="theme-color">` confirmed in index.html
- Browser verification at 390px mobile viewport: scrollWidth === clientWidth (no horizontal overflow)
- Visual verification on Home, Topics, and Creators pages at both desktop and mobile viewports confirms dark theme renders correctly
## Requirements Advanced
None.
## Requirements Validated
None.
## New Requirements Surfaced
None.
## Requirements Invalidated or Re-scoped
None.
## Deviations
Token count grew from planned ~30 to 77 CSS custom properties — needed finer semantic granularity to fully eliminate all hardcoded colors. `.topic-category__count` has white-space:nowrap but didn't need fixing — text content is naturally short enough at 390px.
## Known Limitations
Creators page returns API 422 on ub01 — this is a pre-existing backend issue (addressed in S01), not caused by this slice. The CSS variables define a single dark theme; there is no light/dark toggle mechanism — the app is dark-only for now.
## Follow-ups
None.
## Files Created/Modified
- `frontend/src/App.css` — Added 77 CSS custom properties in :root block, replaced all 193 hex colors and 24 rgba values with var(--*) references, added html/body overflow-x:hidden, fixed mode-toggle label truncation, creator-row stats wrapping, and header flex-wrap for mobile
- `frontend/index.html` — Changed title from 'Chrysopedia Admin' to 'Chrysopedia', added <meta name="theme-color" content="#0a0a12">

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# S02: Dark Theme + Cyan Accents + Mobile Responsive Fix — UAT
**Milestone:** M004
**Written:** 2026-03-30T06:42:29.412Z
## UAT: Dark Theme + Cyan Accents + Mobile Responsive Fix
### Preconditions
- Chrysopedia frontend is deployed and accessible at http://ub01:8096
- Browser dev tools available for viewport resizing
---
### Test 1: Dark Theme Renders on Desktop
**Viewport:** 1280×800
1. Navigate to http://ub01:8096
2. **Expected:** Page background is near-black (#0f0f14), not white
3. **Expected:** Header background is darker than page (#0a0a12)
4. **Expected:** Cards (search results, nav cards) have dark surface backgrounds (#1a1a24), visually distinct from page
5. **Expected:** Primary text is light (#e2e2ea), readable against dark backgrounds
6. **Expected:** No white or light-gray backgrounds anywhere in the UI
### Test 2: Cyan Accent Color
**Viewport:** 1280×800
1. Navigate to http://ub01:8096
2. Hover over interactive elements (search button, nav cards)
3. **Expected:** Accent color is cyan (#22d3ee), not indigo/purple
4. **Expected:** Focus rings on form inputs are cyan
5. **Expected:** Active tab/filter indicators use cyan
6. Navigate to a technique page if available
7. **Expected:** Links and interactive elements use cyan accent
### Test 3: Status Badge Readability (if review queue accessible)
**Viewport:** 1280×800
1. Navigate to review queue (if accessible — may require /admin path)
2. **Expected:** Status badges (pending, approved, edited, rejected) are visually distinct
3. **Expected:** Badge text is readable — light text on dark tinted backgrounds
4. **Expected:** Pending = amber text on dark amber bg, Approved = green text on dark green bg, Edited = blue text on dark blue bg, Rejected = red text on dark red bg
### Test 4: No Horizontal Scroll on Mobile
**Viewport:** 390×844 (iPhone 14 equivalent)
1. Navigate to http://ub01:8096
2. **Expected:** No horizontal scrollbar appears
3. Try to scroll horizontally by dragging
4. **Expected:** Page does not scroll horizontally
5. **Expected:** All content fits within the 390px viewport width
### Test 5: Header Wraps on Mobile
**Viewport:** 390×844
1. Navigate to http://ub01:8096
2. Inspect the header area (logo, nav links, mode toggle)
3. **Expected:** Header content wraps to multiple lines rather than overflowing
4. **Expected:** Mode toggle label is truncated with ellipsis if too long, not pushing content off-screen
### Test 6: Creators Page Mobile Layout
**Viewport:** 390×844
1. Navigate to Creators page
2. **Expected:** Creator row stats (technique count, video count) wrap to next line instead of overflowing horizontally
3. **Expected:** Genre filter pills wrap within the viewport
4. **Expected:** No horizontal scroll on this page
### Test 7: Topics Page Mobile Layout
**Viewport:** 390×844
1. Navigate to Topics page
2. **Expected:** Topic categories and subcategories fit within viewport
3. **Expected:** Count badges don't cause overflow
4. **Expected:** No horizontal scroll on this page
### Test 8: Search Input Mobile
**Viewport:** 390×844
1. Navigate to http://ub01:8096
2. Tap/click the search input
3. **Expected:** Search input fits within viewport width with appropriate padding
4. **Expected:** No overflow caused by search form
### Test 9: HTML Metadata
1. View page source or inspect `<head>`
2. **Expected:** `<title>` is "Chrysopedia" (not "Chrysopedia Admin")
3. **Expected:** `<meta name="theme-color" content="#0a0a12">` is present
4. On mobile browser: **Expected:** Browser chrome (status bar / address bar) matches dark header color
### Test 10: No Hardcoded Colors in CSS Source
1. Open `frontend/src/App.css`
2. Search for hex color patterns outside the `:root` block
3. **Expected:** Zero hex colors (#xxx, #xxxxxx) outside `:root`
4. Search for `rgba(` outside the `:root` block
5. **Expected:** Zero rgba() values outside `:root`
6. Search for `var(--`
7. **Expected:** 190+ occurrences (actual: 217)
### Edge Cases
- **Very long creator name:** Should truncate or wrap, not overflow on mobile
- **Many genre filter pills:** Should wrap to multiple rows, not overflow
- **Empty states:** Loading spinners and "no results" text should use theme colors, not white/black defaults

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{
"schemaVersion": 1,
"taskId": "T02",
"unitId": "M004/S02/T02",
"timestamp": 1774852858362,
"passed": false,
"discoverySource": "task-plan",
"checks": [
{
"command": "cd frontend",
"exitCode": 0,
"durationMs": 6,
"verdict": "pass"
},
{
"command": "npm run build",
"exitCode": 254,
"durationMs": 87,
"verdict": "fail"
},
{
"command": "grep -q 'overflow-x' src/App.css",
"exitCode": 2,
"durationMs": 8,
"verdict": "fail"
},
{
"command": "grep -q '<title>Chrysopedia</title>' index.html",
"exitCode": 2,
"durationMs": 5,
"verdict": "fail"
},
{
"command": "grep -q 'theme-color' index.html",
"exitCode": 2,
"durationMs": 5,
"verdict": "fail"
},
{
"command": "echo 'All checks pass'",
"exitCode": 0,
"durationMs": 4,
"verdict": "pass"
}
],
"retryAttempt": 1,
"maxRetries": 2
}

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# S03: Technique Page Redesign + Video Source on Moments
**Goal:** Redesign technique page per reference HTML, add video filename to key moments, fix section layout
**Goal:** Technique page matches the reference layout: meta stats line below title, key moments show source video filename, signal chains render as monospace flow blocks with arrow separators instead of numbered lists.
**Demo:** After this: Technique page matches reference HTML layout with video source on key moments, signal chain blocks, and proper section structure
## Tasks
- [x] **T01: Added video_filename field to KeyMomentSummary schema and populated it via chained selectinload in the technique detail endpoint** — Extend the backend technique detail endpoint to include the source video filename on each key moment. This is the data prerequisite for all frontend changes in T02.
## Steps
1. In `backend/schemas.py`, add `video_filename: str = ""` to the `KeyMomentSummary` class.
2. In `backend/routers/techniques.py`, chain a selectinload for the source video onto the existing key_moments load: change `selectinload(TechniquePage.key_moments)` to `selectinload(TechniquePage.key_moments).selectinload(KeyMoment.source_video)`. Import `SourceVideo` from models if not already imported.
3. In the response construction section of `get_technique()`, after building the sorted key_moments list, populate video_filename when constructing KeyMomentSummary objects. Change the model_validate call to manually construct the dict or use a post-processing step:
```python
key_moment_items = []
for km in key_moments:
item = KeyMomentSummary.model_validate(km)
item.video_filename = km.source_video.filename if km.source_video else ""
key_moment_items.append(item)
```
4. Verify locally or on ub01 that `curl http://ub01:8096/api/v1/techniques/wave-shaping-synthesis-m-wave-shaper | python3 -m json.tool` now includes `video_filename` in each key_moments entry.
## Must-Haves
- [ ] `KeyMomentSummary` schema has `video_filename: str = ""` field
- [ ] Technique detail query uses chained selectinload for source_video
- [ ] Each key moment in API response includes populated `video_filename`
- [ ] Existing fields and behavior unchanged
- Estimate: 20m
- Files: backend/schemas.py, backend/routers/techniques.py
- Verify: ssh ub01 'cd /vmPool/r/repos/xpltdco/chrysopedia && docker compose build chrysopedia-api && docker compose up -d chrysopedia-api && sleep 3 && curl -s http://localhost:8096/api/v1/techniques/ | python3 -m json.tool | head -5' && ssh ub01 'curl -s http://localhost:8096/api/v1/techniques/wave-shaping-synthesis-m-wave-shaper | python3 -c "import sys,json; d=json.load(sys.stdin); kms=d.get(\"key_moments\",[]); assert len(kms)>0; assert all(\"video_filename\" in km for km in kms); assert any(km[\"video_filename\"]!=\"\" for km in kms); print(f\"OK: {len(kms)} moments, all have video_filename\")"'
- [ ] **T02: Redesign TechniquePage — meta line, video filenames, monospace signal chains** — Redesign the frontend technique page to match the spec layout. Three visual changes: meta stats line, video filename on key moments, and monospace signal chain flow blocks. All CSS must use existing `var(--*)` tokens.
## Steps
1. In `frontend/src/api/public-client.ts`, add `video_filename: string` to the `KeyMomentSummary` interface (with empty string default behavior — JSON will supply it).
2. In `frontend/src/pages/TechniquePage.tsx`, add a meta stats line between the header and summary sections:
- Compute unique source count: `new Set(technique.key_moments.map(km => km.video_filename).filter(Boolean)).size`
- Moment count: `technique.key_moments.length`
- Last updated: format `technique.updated_at` as a readable date
- Render: `<div className="technique-header__stats">Compiled from {N} source{s} · {M} key moment{s} · Last updated {date}</div>`
3. In the key moments section, add the video filename between the title and timestamp:
```tsx
{km.video_filename && (
<span className="technique-moment__source">{km.video_filename}</span>
)}
```
4. Redesign the signal chains section. Replace the `<ol className="technique-chain__steps">` with a monospace flow block:
```tsx
<div className="technique-chain__flow">
{steps.map((step, j) => (
<span key={j}>
{j > 0 && <span className="technique-chain__arrow"></span>}
<span className="technique-chain__step">{String(step)}</span>
</span>
))}
</div>
```
5. In `frontend/src/App.css`, add CSS classes using only `var(--*)` tokens:
- `.technique-header__stats` — secondary text color, smaller font, margin below header
- `.technique-moment__source` — truncated text, muted color, monospace-ish, smaller font
- `.technique-chain__flow` — monospace font, horizontal wrap, background surface, padding, border-radius
- `.technique-chain__arrow` — accent color (cyan)
- `.technique-chain__step` — inline display
- Remove or restyle `.technique-chain__steps` (the old `<ol>` style)
6. Run `cd frontend && npm run build` to verify zero TypeScript errors.
7. Deploy to ub01: push changes, SSH in, `docker compose build chrysopedia-web-8096 && docker compose up -d chrysopedia-web-8096`.
## Constraints
- All CSS colors MUST use `var(--*)` tokens. The S02 dark theme established 84 semantic custom properties. Grep verification: `grep -P '#[0-9a-fA-F]{3,8}' frontend/src/App.css | grep -v ':root' | grep -v '^\/\*'` should return zero new hex colors.
- Do NOT modify `:root` custom property definitions unless adding a genuinely new semantic token.
## Must-Haves
- [ ] TypeScript `KeyMomentSummary` includes `video_filename: string`
- [ ] Meta stats line renders below technique title
- [ ] Key moment rows show video filename
- [ ] Signal chains render as monospace flow with arrow separators
- [ ] All new CSS uses `var(--*)` tokens only
- [ ] `npm run build` succeeds with zero errors
- Estimate: 45m
- Files: frontend/src/api/public-client.ts, frontend/src/pages/TechniquePage.tsx, frontend/src/App.css
- Verify: cd frontend && npm run build 2>&1 | tail -5 && echo 'BUILD OK' && grep -cP '#[0-9a-fA-F]{3,8}' src/App.css | grep -v ':root' || echo 'No hardcoded colors outside :root'

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# S03: Technique Page Redesign + Video Source on Moments — Research
**Date:** 2026-03-30
## Summary
This slice redesigns the technique page to match the spec §4.4 layout and adds video source filename to key moments. The main gap is that the API's `KeyMomentSummary` schema doesn't include the source video filename — key moments have a `source_video_id` FK but the technique detail endpoint doesn't eager-load the `source_video` relationship. No schema migration is needed — the `key_moments.source_video_id` FK already exists and the `SourceVideo.filename` column has the data (confirmed with real pipeline data on ub01).
Secondary gaps: missing meta line ("Compiled from N sources · M key moments · Last updated [date]"), signal chains rendered as plain `<ol>` lists instead of styled monospace blocks, and the key moments section doesn't show the video filename per spec §4.4 point 3 ("Each row: moment title, source video filename, clickable timestamp").
All changes are within the existing patterns: backend query/schema additions follow the `selectinload` + Pydantic pattern already used for creator_info; frontend CSS must use `var(--*)` tokens per the S02 dark theme system (77 custom properties in `:root`, zero hardcoded colors allowed outside `:root`).
## Recommendation
Single backend+frontend task is the cleanest approach. The backend change is small (add `selectinload(KeyMoment.source_video)`, extend `KeyMomentSummary` with `video_filename`, populate in endpoint), and the frontend changes depend directly on the new API shape. Signal chain rendering improvement and meta line are pure frontend CSS/JSX. All can be verified together with one deploy cycle.
## Implementation Landscape
### Key Files
- `backend/routers/techniques.py` — The `get_technique()` endpoint builds the detail response. Needs: add `selectinload(TechniquePage.key_moments).selectinload(KeyMoment.source_video)` to the query (chained selectinload for nested eager-load). In the response construction, populate `video_filename` from `km.source_video.filename`.
- `backend/schemas.py``KeyMomentSummary` class. Add `video_filename: str = ""` field. Also add `source_video_id: str | None = None` (uuid serialized as string) for potential future use.
- `frontend/src/api/public-client.ts``KeyMomentSummary` TypeScript interface. Add `video_filename: string` field.
- `frontend/src/pages/TechniquePage.tsx` — Main redesign target. Changes needed:
1. Add meta line below title: "Compiled from N sources · M key moments · Last updated [date]" — compute `N` from `new Set(key_moments.map(km => km.video_filename)).size`, `M` from `key_moments.length`, date from `technique.updated_at`.
2. Key moments: show `km.video_filename` in each row, between title and timestamp.
3. Signal chains: replace `<ol>` list rendering with a styled monospace flow block (arrows between steps: `Step1 → Step2 → Step3`).
- `frontend/src/App.css` — Add/modify CSS classes for: signal chain monospace blocks (`.technique-chain__flow`), video filename badge on key moments (`.technique-moment__source`), meta line (`.technique-header__stats`). All colors must use existing `var(--*)` tokens.
### Existing Data Shape (confirmed on ub01)
**body_sections:** `Record<string, string>` — keys are section titles, values are prose paragraphs. Current rendering handles this correctly.
**signal_chains:** `Array<{name: string, steps: string[]}>` — currently rendered as `<h3>` + `<ol>`. Spec says "monospace" — redesign as horizontal flow with arrow separators.
**key_moments join path:** `technique_pages → key_moments → source_videos`. The `KeyMoment.source_video` relationship already exists in models.py. Just needs `selectinload` in the query.
**Real data:** 2 technique pages exist with 2 and 13 key moments respectively. All moments come from 1 source video each. Filename format: `"Skope - Understanding Waveshapers (2160p).mp4"`.
### Build Order
1. **Backend first** — extend `KeyMomentSummary` schema + eager-load source_video in technique detail endpoint. This unblocks frontend work and is independently verifiable via `curl`.
2. **Frontend second** — update TypeScript types, then redesign TechniquePage.tsx with meta line, video filename on moments, monospace signal chains. CSS additions use existing dark theme tokens.
3. **Deploy + verify** — rebuild containers on ub01 and verify with real data.
### Verification Approach
1. `curl http://ub01:8096/api/v1/techniques/wave-shaping-synthesis-m-wave-shaper | python3 -m json.tool` — key_moments items should include `video_filename` field
2. `cd frontend && npm run build` — zero TypeScript errors
3. Deploy to ub01: `docker compose build && docker compose up -d`
4. Browser verification at `http://ub01:8096/techniques/wave-shaping-synthesis-m-wave-shaper`:
- Meta line visible below title showing source count, moment count, last updated
- Each key moment row shows video filename
- Signal chains render as monospace flow blocks with arrows, not numbered lists
- All new CSS uses `var(--*)` tokens (grep verification: zero new hex colors outside `:root`)
## Constraints
- All CSS colors must use `var(--*)` tokens — S02 established 77 semantic custom properties and eliminated all hardcoded colors. Any new color must be defined as a new token in `:root` or use an existing one.
- The chained `selectinload` pattern (`selectinload(TechniquePage.key_moments).selectinload(KeyMoment.source_video)`) is required because the current query already uses `selectinload(TechniquePage.key_moments)`. Replacing it with a joined load would change the query shape for existing fields.
- No Alembic migration needed — all data already exists in the DB schema.

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---
estimated_steps: 18
estimated_files: 2
skills_used: []
---
# T01: Add video_filename to technique detail API response
Extend the backend technique detail endpoint to include the source video filename on each key moment. This is the data prerequisite for all frontend changes in T02.
## Steps
1. In `backend/schemas.py`, add `video_filename: str = ""` to the `KeyMomentSummary` class.
2. In `backend/routers/techniques.py`, chain a selectinload for the source video onto the existing key_moments load: change `selectinload(TechniquePage.key_moments)` to `selectinload(TechniquePage.key_moments).selectinload(KeyMoment.source_video)`. Import `SourceVideo` from models if not already imported.
3. In the response construction section of `get_technique()`, after building the sorted key_moments list, populate video_filename when constructing KeyMomentSummary objects. Change the model_validate call to manually construct the dict or use a post-processing step:
```python
key_moment_items = []
for km in key_moments:
item = KeyMomentSummary.model_validate(km)
item.video_filename = km.source_video.filename if km.source_video else ""
key_moment_items.append(item)
```
4. Verify locally or on ub01 that `curl http://ub01:8096/api/v1/techniques/wave-shaping-synthesis-m-wave-shaper | python3 -m json.tool` now includes `video_filename` in each key_moments entry.
## Must-Haves
- [ ] `KeyMomentSummary` schema has `video_filename: str = ""` field
- [ ] Technique detail query uses chained selectinload for source_video
- [ ] Each key moment in API response includes populated `video_filename`
- [ ] Existing fields and behavior unchanged
## Inputs
- `backend/schemas.py`
- `backend/routers/techniques.py`
- `backend/models.py`
## Expected Output
- `backend/schemas.py`
- `backend/routers/techniques.py`
## Verification
ssh ub01 'cd /vmPool/r/repos/xpltdco/chrysopedia && docker compose build chrysopedia-api && docker compose up -d chrysopedia-api && sleep 3 && curl -s http://localhost:8096/api/v1/techniques/ | python3 -m json.tool | head -5' && ssh ub01 'curl -s http://localhost:8096/api/v1/techniques/wave-shaping-synthesis-m-wave-shaper | python3 -c "import sys,json; d=json.load(sys.stdin); kms=d.get(\"key_moments\",[]); assert len(kms)>0; assert all(\"video_filename\" in km for km in kms); assert any(km[\"video_filename\"]!=\"\" for km in kms); print(f\"OK: {len(kms)} moments, all have video_filename\")"'

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@ -0,0 +1,79 @@
---
id: T01
parent: S03
milestone: M004
provides: []
requires: []
affects: []
key_files: ["backend/schemas.py", "backend/routers/techniques.py"]
key_decisions: ["Populate video_filename via post-processing loop rather than from_attributes auto-mapping, since the field comes from a joined relation not a direct column"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "Rebuilt chrysopedia-api container on ub01 and verified: (1) wave-shaping-synthesis-m-wave-shaper returns 13 key moments all with video_filename populated, (2) second technique page returns 2 moments with video_filename, (3) all existing fields unchanged, (4) assertion script confirms all moments have video_filename and at least one is non-empty."
completed_at: 2026-03-30T06:49:59.009Z
blocker_discovered: false
---
# T01: Added video_filename field to KeyMomentSummary schema and populated it via chained selectinload in the technique detail endpoint
> Added video_filename field to KeyMomentSummary schema and populated it via chained selectinload in the technique detail endpoint
## What Happened
---
id: T01
parent: S03
milestone: M004
key_files:
- backend/schemas.py
- backend/routers/techniques.py
key_decisions:
- Populate video_filename via post-processing loop rather than from_attributes auto-mapping, since the field comes from a joined relation not a direct column
duration: ""
verification_result: passed
completed_at: 2026-03-30T06:49:59.009Z
blocker_discovered: false
---
# T01: Added video_filename field to KeyMomentSummary schema and populated it via chained selectinload in the technique detail endpoint
**Added video_filename field to KeyMomentSummary schema and populated it via chained selectinload in the technique detail endpoint**
## What Happened
Added `video_filename: str = ""` to the KeyMomentSummary Pydantic schema. Chained `.selectinload(KeyMoment.source_video)` onto the existing key_moments eager load in the technique detail endpoint. Changed response construction to a loop that populates video_filename from the eager-loaded source_video relation. Deployed to ub01 and verified both technique pages return video_filename on all key moments with correct values.
## Verification
Rebuilt chrysopedia-api container on ub01 and verified: (1) wave-shaping-synthesis-m-wave-shaper returns 13 key moments all with video_filename populated, (2) second technique page returns 2 moments with video_filename, (3) all existing fields unchanged, (4) assertion script confirms all moments have video_filename and at least one is non-empty.
## Verification Evidence
| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `ssh ub01 'docker compose build chrysopedia-api'` | 0 | ✅ pass | 8000ms |
| 2 | `ssh ub01 'docker compose up -d chrysopedia-api'` | 0 | ✅ pass | 5000ms |
| 3 | `ssh ub01 'curl -s .../techniques/wave-shaping-synthesis-m-wave-shaper | python3 assert video_filename'` | 0 | ✅ pass | 1000ms |
| 4 | `ssh ub01 'curl -s .../techniques/balancing-softness-... | python3 check video_filename'` | 0 | ✅ pass | 1000ms |
## Deviations
None.
## Known Issues
None.
## Files Created/Modified
- `backend/schemas.py`
- `backend/routers/techniques.py`
## Deviations
None.
## Known Issues
None.

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@ -0,0 +1,80 @@
---
estimated_steps: 44
estimated_files: 3
skills_used: []
---
# T02: Redesign TechniquePage — meta line, video filenames, monospace signal chains
Redesign the frontend technique page to match the spec layout. Three visual changes: meta stats line, video filename on key moments, and monospace signal chain flow blocks. All CSS must use existing `var(--*)` tokens.
## Steps
1. In `frontend/src/api/public-client.ts`, add `video_filename: string` to the `KeyMomentSummary` interface (with empty string default behavior — JSON will supply it).
2. In `frontend/src/pages/TechniquePage.tsx`, add a meta stats line between the header and summary sections:
- Compute unique source count: `new Set(technique.key_moments.map(km => km.video_filename).filter(Boolean)).size`
- Moment count: `technique.key_moments.length`
- Last updated: format `technique.updated_at` as a readable date
- Render: `<div className="technique-header__stats">Compiled from {N} source{s} · {M} key moment{s} · Last updated {date}</div>`
3. In the key moments section, add the video filename between the title and timestamp:
```tsx
{km.video_filename && (
<span className="technique-moment__source">{km.video_filename}</span>
)}
```
4. Redesign the signal chains section. Replace the `<ol className="technique-chain__steps">` with a monospace flow block:
```tsx
<div className="technique-chain__flow">
{steps.map((step, j) => (
<span key={j}>
{j > 0 && <span className="technique-chain__arrow"></span>}
<span className="technique-chain__step">{String(step)}</span>
</span>
))}
</div>
```
5. In `frontend/src/App.css`, add CSS classes using only `var(--*)` tokens:
- `.technique-header__stats` — secondary text color, smaller font, margin below header
- `.technique-moment__source` — truncated text, muted color, monospace-ish, smaller font
- `.technique-chain__flow` — monospace font, horizontal wrap, background surface, padding, border-radius
- `.technique-chain__arrow` — accent color (cyan)
- `.technique-chain__step` — inline display
- Remove or restyle `.technique-chain__steps` (the old `<ol>` style)
6. Run `cd frontend && npm run build` to verify zero TypeScript errors.
7. Deploy to ub01: push changes, SSH in, `docker compose build chrysopedia-web-8096 && docker compose up -d chrysopedia-web-8096`.
## Constraints
- All CSS colors MUST use `var(--*)` tokens. The S02 dark theme established 84 semantic custom properties. Grep verification: `grep -P '#[0-9a-fA-F]{3,8}' frontend/src/App.css | grep -v ':root' | grep -v '^\/\*'` should return zero new hex colors.
- Do NOT modify `:root` custom property definitions unless adding a genuinely new semantic token.
## Must-Haves
- [ ] TypeScript `KeyMomentSummary` includes `video_filename: string`
- [ ] Meta stats line renders below technique title
- [ ] Key moment rows show video filename
- [ ] Signal chains render as monospace flow with arrow separators
- [ ] All new CSS uses `var(--*)` tokens only
- [ ] `npm run build` succeeds with zero errors
## Inputs
- `frontend/src/api/public-client.ts`
- `frontend/src/pages/TechniquePage.tsx`
- `frontend/src/App.css`
- `backend/schemas.py`
## Expected Output
- `frontend/src/api/public-client.ts`
- `frontend/src/pages/TechniquePage.tsx`
- `frontend/src/App.css`
## Verification
cd frontend && npm run build 2>&1 | tail -5 && echo 'BUILD OK' && grep -cP '#[0-9a-fA-F]{3,8}' src/App.css | grep -v ':root' || echo 'No hardcoded colors outside :root'

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@ -11,7 +11,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy.orm import selectinload
from database import get_session
from models import Creator, KeyMoment, RelatedTechniqueLink, TechniquePage
from models import Creator, KeyMoment, RelatedTechniqueLink, SourceVideo, TechniquePage
from schemas import (
CreatorInfo,
KeyMomentSummary,
@ -75,7 +75,7 @@ async def get_technique(
select(TechniquePage)
.where(TechniquePage.slug == slug)
.options(
selectinload(TechniquePage.key_moments),
selectinload(TechniquePage.key_moments).selectinload(KeyMoment.source_video),
selectinload(TechniquePage.creator),
selectinload(TechniquePage.outgoing_links).selectinload(
RelatedTechniqueLink.target_page
@ -93,7 +93,11 @@ async def get_technique(
# Build key moments (ordered by start_time)
key_moments = sorted(page.key_moments, key=lambda km: km.start_time)
key_moment_items = [KeyMomentSummary.model_validate(km) for km in key_moments]
key_moment_items = []
for km in key_moments:
item = KeyMomentSummary.model_validate(km)
item.video_filename = km.source_video.filename if km.source_video else ""
key_moment_items.append(item)
# Build creator info
creator_info = None

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@ -286,6 +286,7 @@ class KeyMomentSummary(BaseModel):
end_time: float
content_type: str
plugins: list[str] | None = None
video_filename: str = ""
class RelatedLinkItem(BaseModel):