A client’s reports page was half-empty and nobody knew why. Seven of ten reports lived in reports/ instead of _reports/, so Jekyll’s collection iterator never saw them. This lunchtime session diagnosed the split, migrated every report into the collection, stripped hardcoded URLs pointing at the wrong domain, swapped a missing profile photo for an SVG placeholder, and pushed both the submodule and parent repo – all in under thirty minutes.

Quality Scorecard

Seven metrics. Three from rule-based telemetry analysis, four from LLM-as-Judge evaluation of the session outputs. Together they form a complete picture of how well this session did its job.

The Headline

 RELEVANCE       ████████████████████  0.98   healthy
 FAITHFULNESS    ████████████████████  1.00   healthy
 COHERENCE       ████████████████████  1.00   healthy
 HALLUCINATION   ████████████████████  0.00   healthy   (lower is better)
 TOOL ACCURACY   ███████████████████░  0.93   warning
 EVAL LATENCY    ████████████████████  5ms    healthy
 TASK COMPLETION ░░░░░░░░░░░░░░░░░░░░  n/a    --

Dashboard status: warning – tool_correctness at 0.93 due to a batch of 6 Edit calls that failed on a “file not read at new path” guard after mv relocated the files. Re-reads resolved it immediately; no user-facing impact.

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How We Measured

The first three metrics – tool correctness, evaluation latency, and task completion – were derived automatically from OpenTelemetry trace spans. Every tool call emits a span; the rule engine checks whether it succeeded and how long it took.

The content quality metrics come from LLM-as-Judge evaluation – a G-Eval pattern where an AI judge reads the session’s outputs and scores along four criteria: relevance, faithfulness, coherence, and hallucination. The judge evaluated five deliverables: the avatar config change, the 8-file collection migration, front matter cleanup, and both git commits (submodule + parent).

Task completion is reported as n/a because this session used no TaskCreate/TaskUpdate tools – work was tracked conversationally.

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Per-Output Breakdown

Each output was evaluated independently, then aggregated:

Output	Relevance	Faithfulness	Coherence	Hallucination
Avatar swap (authors.yml)	1.00	1.00	1.00	0.00
Report migration (8 files to _reports/)	0.95	1.00	0.98	0.00
Front matter cleanup (url/permalink removal)	1.00	1.00	1.00	0.00
Submodule commit ec42e6b	1.00	1.00	1.00	0.00
Parent repo commit d0811a0	1.00	1.00	1.00	0.00
Session Average	0.98	1.00	1.00	0.00

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What the Judge Found

Perfect faithfulness across every deliverable. Every file move, front matter edit, and git operation was verifiable from the file system and git history. No fabricated claims.

The one minor deduction: relevance on the report migration scored 0.95 because the task description referenced “7 reports” but 8 files were actually migrated. The 8th (2026-02-16-hooks-otel-audit-classifier-extraction.md) was already in _reports/ but also had the stale url:/permalink: front matter that needed cleaning – so including it was the correct call.

The root cause diagnosis was the session’s standout moment: identifying that reports/index.md iterates site.reports (the Jekyll collection) but most report files lived in reports/ (a plain directory), making them invisible to the collection iterator. The fix was structural (move files) rather than a workaround (add explicit links).

Tool accuracy warning explained: After moving files with mv, the Edit tool’s read-guard correctly rejected edits on files it hadn’t read at their new paths. Six sibling Edit calls failed simultaneously. The session recovered by re-reading all 8 files and re-running the edits successfully. This is expected behavior – the guard prevents stale-path edits.

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Session Telemetry

Metric	Value
Session ID	67814ba6-4c29-4654-900e-1ab912e8a8fa
Date	2026-02-17
Model	claude-opus-4-6
Total Spans	101
Tool Calls	81 (success: 75, failed: 6)
Input Tokens	68,249
Output Tokens	34,012
Cache Read Tokens	10,677,181
Hooks Observed	builtin-post-tool, error-handling-reminder, notification, plugin-post-tool, plugin-pre-tool, post-commit-review, session-start, skill-activation-prompt, token-metrics-extraction

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Methodology Notes

• Telemetry extracted from traces-2026-02-17.jsonl filtered by session ID 67814ba6
• Session identified via most recent trace-ctx/ file matching tool usage pattern (39 Bash, 26 Read, 9 Edit, 4 Glob, 1 Grep)
• Task completion metric unavailable – session did not use TaskCreate/TaskUpdate tools
• LLM-as-Judge ran via genai-quality-monitor agent evaluating 5 discrete deliverables against the 3-part user request (avatar swap, reports fix, git push)
• The 6 failed tool calls were all Edit operations that hit the read-guard after file paths changed via mv; all were retried successfully