feat: Ran manual chat evaluation against live endpoint, documented qual…

- ".gsd/milestones/M025/slices/S09/S09-QUALITY-REPORT.md"
- "backend/pipeline/quality/results/chat_eval_baseline.json"

GSD-Task: S09/T03

.gsd/milestones/M025/slices/S09/S09-PLAN.md

@@ -41,7 +41,7 @@ Steps:
   - Estimate: 1h
   - Files: backend/chat_service.py, backend/tests/test_chat.py
   - Verify: cd backend && python -m pytest tests/test_chat.py -v
-- [ ] **T03: Run chat evaluation, assess personality fidelity, write quality report** — Execute the chat evaluation harness against the live Chrysopedia chat endpoint on ub01, assess personality fidelity across weight levels for multiple creators, and write a quality report documenting all findings.
+- [x] **T03: Ran manual chat evaluation against live endpoint, documented quality baseline with critical findings on creator scoping and missing personality profiles** — Execute the chat evaluation harness against the live Chrysopedia chat endpoint on ub01, assess personality fidelity across weight levels for multiple creators, and write a quality report documenting all findings.
 
 This task requires the live stack running on ub01 (API at http://ub01:8096). If the endpoint is unreachable, use manual curl-based evaluation with representative queries and score responses by inspection.
 

.gsd/milestones/M025/slices/S09/S09-QUALITY-REPORT.md

@@ -0,0 +1,169 @@
+# S09 Chat Quality Report
+
+**Date:** 2026-04-04
+**Evaluation method:** Manual curl-based (LLM upstream `chat.forgetyour.name` returning 502 — automated eval harness could not complete LLM scoring)
+**Endpoint:** http://ub01:8096/api/v1/chat
+**API health:** ✅ Connected, search pipeline functional
+
+---
+
+## 1. Evaluation Summary
+
+The chat endpoint is operational for source retrieval (search + Qdrant semantic pipeline) but LLM generation was unavailable during evaluation due to the upstream OpenAI-compatible proxy returning 502 Bad Gateway. This limits scoring to source quality, prompt architecture review, and personality fidelity mechanism assessment.
+
+**What was testable:**
+- Source retrieval quality and relevance (10 sources per query)
+- Cross-creator source diversity
+- Creator-scoped search behavior
+- Personality weight parameter acceptance and routing
+- Prompt template quality (code review + unit test coverage)
+- Personality injection architecture (5-tier progressive system)
+
+**What was NOT testable:**
+- Actual LLM response quality (citation accuracy, response structure, domain expertise, source grounding)
+- Personality fidelity in generated text (requires LLM completions)
+- End-to-end composite scoring via the chat_eval harness
+
+---
+
+## 2. Prompt Changes (Before → After)
+
+### Before (4 lines, flat)
+```
+You are Chrysopedia, an expert encyclopedic assistant for music production techniques.
+Answer the user's question using ONLY the numbered sources below. Cite sources by
+writing [N] inline (e.g. [1], [2]) where N is the source number. If the sources
+do not contain enough information, say so honestly — do not invent facts.
+```
+
+### After (structured, 18 lines with headers)
+```
+You are Chrysopedia, an expert assistant for music production techniques —
+synthesis, sound design, mixing, sampling, and audio processing.
+
+## Rules
+- Use ONLY the numbered sources below. Do not invent facts.
+- Cite every factual claim inline with [N] immediately after the claim
+  (e.g. "Parallel compression adds sustain [2] while preserving transients [1].").
+- When sources disagree, present both perspectives with their citations.
+- If the sources lack enough information, say so honestly.
+
+## Response format
+- Aim for 2–4 short paragraphs. Expand only when the question warrants detail.
+- Use bullet lists for steps, signal chains, or parameter lists.
+- **Bold** key terms on first mention.
+- Use audio/synthesis/mixing terminology naturally — do not over-explain
+  standard concepts (e.g. LFO, sidechain, wet/dry) unless the user asks.
+```
+
+### Changes Summary
+| Dimension | Before | After |
+|-----------|--------|-------|
+| Citation guidance | Generic `[N]` instruction | Specific inline citation examples with multi-source sentence |
+| Response structure | None | 2–4 paragraphs, bullet lists for steps, bold key terms |
+| Domain awareness | "expert encyclopedic" | Explicit music production subdomain list + terminology guidance |
+| Conflicting sources | Not addressed | Explicit "present both perspectives" instruction |
+| Response length | Not addressed | "2–4 short paragraphs" with expand-when-warranted clause |
+| Line count | 4 | 18 (well under 30-line budget) |
+
+All 26 existing tests passed without modification after the rewrite — the tests assert behavioral properties (SSE format, citation numbering, personality injection mechanics) rather than exact prompt text.
+
+---
+
+## 3. Source Retrieval Quality
+
+### Technical queries
+| Query | Sources | Creators represented | Assessment |
+|-------|---------|---------------------|------------|
+| "How do I set up sidechain compression?" | 10 | Break(3), Caracal Project(2), Chee(2), KOAN Sound(1) | ✅ Highly relevant, multi-creator |
+| "What are different approaches to layering synth sounds?" | 10 | Chee(5), COPYCATT(2), Caracal Project(1), Current Value(1), Emperor(1) | ⚠️ Skewed toward Chee — 5/10 sources |
+
+### Creator-scoped queries
+| Query | Creator | Sources from creator | Assessment |
+|-------|---------|---------------------|------------|
+| "How does this creator approach sound design for bass?" | Keota | 0/10 from Keota | ❌ Creator scoping not filtering — returned COPYCATT, Break, Chee |
+| "What mixing techniques does this creator recommend for width?" | Mr. Bill | 0/10 from Mr. Bill | ❌ Same issue — no Mr. Bill sources |
+
+**Finding:** Creator-scoped chat queries use the cascade search mechanism (creator tier → domain tier → global tier), but the ll_keywords approach does not strictly filter to the requested creator. Post-filtering or direct creator ID filtering in the semantic search would improve this.
+
+---
+
+## 4. Personality Fidelity Assessment
+
+### Architecture Review
+
+The personality injection system uses a 5-tier progressive weight mechanism in `_build_personality_block()`:
+
+| Weight Range | Tier | What's Injected |
+|-------------|------|-----------------|
+| < 0.2 | None | No personality block |
+| 0.2–0.39 | Basic tone | teaching_style, formality, energy + subtle hint |
+| 0.4–0.59 | Voice adoption | + descriptors, explanation_approach, analogies, engagement |
+| 0.6–0.79 | Creator voice | + signature_phrases (count scaled by weight) |
+| 0.8–0.89 | Full embodiment | + distinctive_terms, sound_descriptions, sound_words, self_references, pacing |
+| ≥ 0.9 | Complete persona | + full summary paragraph |
+
+Temperature also scales: 0.3 (encyclopedic) → 0.5 (full personality).
+
+### Critical Finding: No Personality Profiles Exist
+
+**All 25 creators in the database have `personality_profile IS NULL`.** This means:
+
+- Any `personality_weight > 0` silently falls back to encyclopedic mode (the `_inject_personality` method returns the unmodified prompt when profile is null)
+- The 5-tier progressive system is architecturally sound but has zero data to operate on
+- The test suite validates the mechanism works correctly with mock profiles (26 tests pass), but no real personality fidelity assessment is possible against the live system
+
+### Personality Fidelity Test Matrix (Weight Levels)
+
+| Creator | Weight 0.0 | Weight 0.5 | Weight 0.8 | Weight 1.0 |
+|---------|-----------|-----------|-----------|-----------|
+| Keota | Encyclopedic (no profile) | Falls back to encyclopedic | Falls back to encyclopedic | Falls back to encyclopedic |
+| Mr. Bill | Encyclopedic (no profile) | Falls back to encyclopedic | Falls back to encyclopedic | Falls back to encyclopedic |
+
+**Result:** Progressive personality injection cannot be assessed until personality profiles are populated. The mechanism is tested and correct (unit tests), but produces no visible differentiation on the live system.
+
+---
+
+## 5. Test Coverage
+
+| Test file | Tests | Status |
+|-----------|-------|--------|
+| `backend/tests/test_chat.py` | 26 | ✅ All pass (1.22s) |
+
+Test categories covered:
+- SSE format and event ordering (sources → token → done)
+- Citation numbering in context block
+- Creator parameter forwarding to search
+- Input validation (empty query, missing query → 422)
+- LLM error produces error SSE event
+- Conversation memory (Redis save/load, cap at 10 pairs, TTL refresh)
+- Personality weight acceptance, prompt injection, tier interpolation
+- Personality fallbacks (null profile, missing creator, weight=0 skips)
+- Temperature scaling with personality weight
+- Weight validation (>1 → 422, <0 → 422, string → 422)
+- Connection error and 500 error fallback behavior
+
+---
+
+## 6. Recommendations
+
+### Immediate (next milestone)
+1. **Populate personality profiles** — Run the personality extraction pipeline for all 25 creators. Without this data, the personality fidelity feature is architecturally complete but functionally inert.
+2. **Fix creator-scoped search** — Creator-scoped chat queries should return sources predominantly from the requested creator. Either tighten the cascade's creator tier (hard filter on creator_id) or add a minimum-creator-source threshold.
+
+### When LLM proxy is restored
+3. **Run automated evaluation** — Execute `python -m pipeline.quality chat_eval --base-url http://localhost:8000` inside the API container to generate baseline composite scores across all 5 dimensions.
+4. **A/B test prompt versions** — Save the old 4-line prompt, run eval with both, compare citation_accuracy and response_structure dimensions.
+
+### Future improvements
+5. **Response length tracking** — Add token/word count to chat usage logs for empirical length distribution analysis.
+6. **Citation hit rate** — Track what fraction of provided sources actually get cited in responses (requires post-processing of LLM output against source numbers).
+7. **Creator source precision** — For creator-scoped queries, measure precision (fraction of returned sources belonging to the target creator) as a search quality metric.
+
+---
+
+## 7. Raw Evaluation Data
+
+Manual evaluation results saved to: `backend/pipeline/quality/results/chat_eval_baseline.json`
+
+The JSON contains source retrieval assessments for each test query since LLM scoring was not possible. When the LLM proxy is restored, re-run the automated eval to generate full 5-dimension scores.

.gsd/milestones/M025/slices/S09/tasks/T02-VERIFY.json

@@ -0,0 +1,24 @@
+{
+  "schemaVersion": 1,
+  "taskId": "T02",
+  "unitId": "M025/S09/T02",
+  "timestamp": 1775313909993,
+  "passed": false,
+  "discoverySource": "task-plan",
+  "checks": [
+    {
+      "command": "cd backend",
+      "exitCode": 0,
+      "durationMs": 14,
+      "verdict": "pass"
+    },
+    {
+      "command": "python -m pytest tests/test_chat.py -v",
+      "exitCode": 4,
+      "durationMs": 239,
+      "verdict": "fail"
+    }
+  ],
+  "retryAttempt": 1,
+  "maxRetries": 2
+}

.gsd/milestones/M025/slices/S09/tasks/T03-SUMMARY.md

@@ -0,0 +1,79 @@
+---
+id: T03
+parent: S09
+milestone: M025
+provides: []
+requires: []
+affects: []
+key_files: [".gsd/milestones/M025/slices/S09/S09-QUALITY-REPORT.md", "backend/pipeline/quality/results/chat_eval_baseline.json"]
+key_decisions: ["Used manual curl-based evaluation as fallback when upstream LLM proxy returned 502", "Documented personality fidelity as architecturally complete but functionally inert"]
+patterns_established: []
+drill_down_paths: []
+observability_surfaces: []
+duration: ""
+verification_result: "Quality report exists at 169 lines (threshold 30). Baseline JSON exists. All 26 chat tests pass in 1.13s."
+completed_at: 2026-04-04T14:50:39.841Z
+blocker_discovered: false
+---
+
+# T03: Ran manual chat evaluation against live endpoint, documented quality baseline with critical findings on creator scoping and missing personality profiles
+
+> Ran manual chat evaluation against live endpoint, documented quality baseline with critical findings on creator scoping and missing personality profiles
+
+## What Happened
+---
+id: T03
+parent: S09
+milestone: M025
+key_files:
+  - .gsd/milestones/M025/slices/S09/S09-QUALITY-REPORT.md
+  - backend/pipeline/quality/results/chat_eval_baseline.json
+key_decisions:
+  - Used manual curl-based evaluation as fallback when upstream LLM proxy returned 502
+  - Documented personality fidelity as architecturally complete but functionally inert
+duration: ""
+verification_result: passed
+completed_at: 2026-04-04T14:50:39.841Z
+blocker_discovered: false
+---
+
+# T03: Ran manual chat evaluation against live endpoint, documented quality baseline with critical findings on creator scoping and missing personality profiles
+
+**Ran manual chat evaluation against live endpoint, documented quality baseline with critical findings on creator scoping and missing personality profiles**
+
+## What Happened
+
+Attempted automated chat_eval harness against ub01:8096 — API healthy, search pipeline functional, but upstream LLM proxy returning 502. Fell back to manual curl evaluation of 6 queries across 4 categories. Found: general source retrieval works well (10 relevant sources, multi-creator diversity), creator-scoped search fails (zero sources from target creator for Keota and Mr. Bill), all 25 creators lack personality_profile data (5-tier injection system architecturally sound but inert), prompt improvements from T02 validated by 26 passing tests. Wrote 169-line quality report and baseline JSON.
+
+## Verification
+
+Quality report exists at 169 lines (threshold 30). Baseline JSON exists. All 26 chat tests pass in 1.13s.
+
+## Verification Evidence
+
+| # | Command | Exit Code | Verdict | Duration |
+|---|---------|-----------|---------|----------|
+| 1 | `test -f .gsd/milestones/M025/slices/S09/S09-QUALITY-REPORT.md && wc -l | awk '{exit ($1 < 30)}'` | 0 | ✅ pass | 100ms |
+| 2 | `test -f backend/pipeline/quality/results/chat_eval_baseline.json` | 0 | ✅ pass | 50ms |
+| 3 | `cd backend && python -m pytest tests/test_chat.py -v` | 0 | ✅ pass | 1130ms |
+
+
+## Deviations
+
+Used manual curl evaluation instead of automated harness (planned fallback). Chat endpoint at /api/v1/chat not /api/chat.
+
+## Known Issues
+
+LLM proxy 502 prevents automated scoring. Creator-scoped search returns zero target-creator sources. No personality profiles populated.
+
+## Files Created/Modified
+
+- `.gsd/milestones/M025/slices/S09/S09-QUALITY-REPORT.md`
+- `backend/pipeline/quality/results/chat_eval_baseline.json`
+
+
+## Deviations
+Used manual curl evaluation instead of automated harness (planned fallback). Chat endpoint at /api/v1/chat not /api/chat.
+
+## Known Issues
+LLM proxy 502 prevents automated scoring. Creator-scoped search returns zero target-creator sources. No personality profiles populated.

backend/pipeline/quality/results/chat_eval_baseline.json

@@ -0,0 +1,91 @@
+{
+  "timestamp": "20260404_043200",
+  "evaluation_method": "manual_curl",
+  "llm_status": "unavailable (upstream 502 Bad Gateway at chat.forgetyour.name)",
+  "api_health": "ok",
+  "total_queries": 6,
+  "scored_queries": 0,
+  "errors_llm": 6,
+  "note": "LLM completions unavailable — only source retrieval quality assessed. Re-run with automated eval when LLM proxy is restored.",
+  "source_retrieval_results": [
+    {
+      "query": "How do I set up sidechain compression on a bass synth using a kick drum as the trigger?",
+      "creator": null,
+      "personality_weight": 0.0,
+      "category": "technical",
+      "source_count": 10,
+      "unique_creators": ["Break", "Caracal Project, The", "Chee", "KOAN Sound"],
+      "creator_distribution": {"Break": 3, "Caracal Project, The": 2, "Chee": 2, "KOAN Sound": 1},
+      "relevance_assessment": "highly_relevant",
+      "notes": "All 10 sources directly about sidechain compression. Good creator diversity."
+    },
+    {
+      "query": "What are the different approaches to layering synth sounds across creators?",
+      "creator": null,
+      "personality_weight": 0.0,
+      "category": "cross_creator",
+      "source_count": 10,
+      "unique_creators": ["Chee", "COPYCATT", "Caracal Project, The", "Current Value", "Emperor"],
+      "creator_distribution": {"Chee": 5, "COPYCATT": 2, "Caracal Project, The": 1, "Current Value": 1, "Emperor": 1},
+      "relevance_assessment": "relevant_but_skewed",
+      "notes": "50% of sources from Chee — cross-creator diversity could be improved."
+    },
+    {
+      "query": "How does this creator approach sound design for bass sounds?",
+      "creator": "Keota",
+      "personality_weight": 0.0,
+      "category": "creator_encyclopedic",
+      "source_count": 10,
+      "unique_creators": ["COPYCATT", "Break", "Chee", "Caracal Project, The"],
+      "creator_distribution": {"COPYCATT": 2, "Break": 2, "Chee": 3, "Caracal Project, The": 3},
+      "relevance_assessment": "creator_scope_failure",
+      "notes": "Zero sources from Keota despite creator-scoped query. Cascade fell through to global tier."
+    },
+    {
+      "query": "What mixing techniques does this creator recommend for achieving width in a mix?",
+      "creator": "Mr. Bill",
+      "personality_weight": 0.0,
+      "category": "creator_encyclopedic",
+      "source_count": 10,
+      "unique_creators": ["Break", "Frequent", "Caracal Project, The", "COPYCATT", "Chee"],
+      "creator_distribution": {"Break": 2, "Frequent": 1, "Caracal Project, The": 2, "COPYCATT": 2, "Chee": 3},
+      "relevance_assessment": "creator_scope_failure",
+      "notes": "Zero sources from Mr. Bill despite creator-scoped query."
+    },
+    {
+      "query": "How does this creator approach sound design for bass sounds? (personality)",
+      "creator": "Keota",
+      "personality_weight": 0.7,
+      "category": "creator_personality",
+      "source_count": 10,
+      "personality_profile_exists": false,
+      "notes": "Personality weight=0.7 accepted but no profile data exists — falls back to encyclopedic mode silently."
+    },
+    {
+      "query": "What mixing techniques does this creator recommend for width? (personality)",
+      "creator": "Mr. Bill",
+      "personality_weight": 0.7,
+      "category": "creator_personality",
+      "source_count": 10,
+      "personality_profile_exists": false,
+      "notes": "Personality weight=0.7 accepted but no profile data exists — falls back to encyclopedic mode silently."
+    }
+  ],
+  "personality_profiles_status": {
+    "total_creators": 25,
+    "creators_with_profile": 0,
+    "assessment": "No personality profiles populated. The 5-tier progressive injection system is architecturally complete (26 unit tests pass) but functionally inert on the live system."
+  },
+  "prompt_changes": {
+    "before_lines": 4,
+    "after_lines": 18,
+    "changes": [
+      "Added structured citation guidance with inline example",
+      "Added response format section (2-4 paragraphs, bullet lists, bold terms)",
+      "Added domain awareness (music production subdomain list)",
+      "Added conflicting source handling instruction",
+      "Added response length guidance"
+    ],
+    "test_impact": "Zero test modifications needed — all 26 tests pass unchanged"
+  }
+}