Forensic root cause analyzer for Antigravity sessions. Classifies scope deltas, rework patterns, root causes, hotspots, and auto-improves prompts/health.
Scanned 6/2/2026
Install via CLI
openskills install ratnesh-maurya/cursor-claude-personas---
name: analyze-project
description: Forensic root cause analyzer for Antigravity sessions. Classifies scope deltas, rework patterns, root causes, hotspots, and auto-improves prompts/health.
version: "1.0"
tags: [analysis, diagnostics, meta, root-cause, project-health, session-review]
---
# /analyze-project — Root Cause Analyst Workflow
Analyze AI-assisted coding sessions in `~/.gemini/antigravity/brain/` and produce a report that explains not just **what happened**, but **why it happened**, **who/what caused it**, and **what should change next time**.
## Goal
For each session, determine:
1. What changed from the initial ask to the final executed work
2. Whether the main cause was:
- user/spec
- agent
- repo/codebase
- validation/testing
- legitimate task complexity
3. Whether the opening prompt was sufficient
4. Which files/subsystems repeatedly correlate with struggle
5. What changes would most improve future sessions
## Global Rules
- Treat `.resolved.N` counts as **iteration signals**, not proof of failure
- Separate **human-added scope**, **necessary discovered scope**, and **agent-introduced scope**
- Separate **agent error** from **repo friction**
- Every diagnosis must include **evidence** and **confidence**
- Confidence levels:
- **High** = direct artifact/timestamp evidence
- **Medium** = multiple supporting signals
- **Low** = plausible inference, not directly proven
- Evidence precedence:
- artifact contents > timestamps > metadata summaries > inference
- If evidence is weak, say so
---
## Step 0.5: Session Intent Classification
Classify the primary session intent from objective + artifacts:
- `DELIVERY`
- `DEBUGGING`
- `REFACTOR`
- `RESEARCH`
- `EXPLORATION`
- `AUDIT_ANALYSIS`
Record:
- `session_intent`
- `session_intent_confidence`
Use intent to contextualize severity and rework shape.
Do not judge exploratory or research sessions by the same standards as narrow delivery sessions.
---
## Step 1: Discover Conversations
1. Read available conversation summaries from system context
2. List conversation folders in the user’s Antigravity `brain/` directory
3. Build a conversation index with:
- `conversation_id`
- `title`
- `objective`
- `created`
- `last_modified`
4. If the user supplied a keyword/path, filter to matching conversations; otherwise analyze all
Output: indexed list of conversations to analyze.
---
## Step 2: Extract Session Evidence
For each conversation, read if present:
### Core artifacts
- `task.md`
- `implementation_plan.md`
- `walkthrough.md`
### Metadata
- `*.metadata.json`
### Version snapshots
- `task.md.resolved.0 ... N`
- `implementation_plan.md.resolved.0 ... N`
- `walkthrough.md.resolved.0 ... N`
### Additional signals
- other `.md` artifacts
- timestamps across artifact updates
- file/folder/subsystem names mentioned in plans/walkthroughs
- validation/testing language
- explicit acceptance criteria, constraints, non-goals, and file targets
Record per conversation:
#### Lifecycle
- `has_task`
- `has_plan`
- `has_walkthrough`
- `is_completed`
- `is_abandoned_candidate` = task exists but no walkthrough
#### Revision / change volume
- `task_versions`
- `plan_versions`
- `walkthrough_versions`
- `extra_artifacts`
#### Scope
- `task_items_initial`
- `task_items_final`
- `task_completed_pct`
- `scope_delta_raw`
- `scope_creep_pct_raw`
#### Timing
- `created_at`
- `completed_at`
- `duration_minutes`
#### Content / quality
- `objective_text`
- `initial_plan_summary`
- `final_plan_summary`
- `initial_task_excerpt`
- `final_task_excerpt`
- `walkthrough_summary`
- `mentioned_files_or_subsystems`
- `validation_requirements_present`
- `acceptance_criteria_present`
- `non_goals_present`
- `scope_boundaries_present`
- `file_targets_present`
- `constraints_present`
---
## Step 3: Prompt Sufficiency
Score the opening request on a 0–2 scale for:
- **Clarity**
- **Boundedness**
- **Testability**
- **Architectural specificity**
- **Constraint awareness**
- **Dependency awareness**
Create:
- `prompt_sufficiency_score`
- `prompt_sufficiency_band` = High / Medium / Low
Then note which missing prompt ingredients likely contributed to later friction.
Do not punish short prompts by default; a narrow, obvious task can still have high sufficiency.
---
## Step 4: Scope Change Classification
Classify scope change into:
- **Human-added scope** — new asks beyond the original task
- **Necessary discovered scope** — work required to complete the original task correctly
- **Agent-introduced scope** — likely unnecessary work introduced by the agent
Record:
- `scope_change_type_primary`
- `scope_change_type_secondary` (optional)
- `scope_change_confidence`
- evidence
Keep one short example in mind for calibration:
- Human-added: “also refactor nearby code while you’re here”
- Necessary discovered: hidden dependency must be fixed for original task to work
- Agent-introduced: extra cleanup or redesign not requested and not required
---
## Step 5: Rework Shape
Classify each session into one primary pattern:
- **Clean execution**
- **Early replan then stable finish**
- **Progressive scope expansion**
- **Reopen/reclose churn**
- **Late-stage verification churn**
- **Abandoned mid-flight**
- **Exploratory / research session**
Record:
- `rework_shape`
- `rework_shape_confidence`
- evidence
---
## Step 6: Root Cause Analysis
For every non-clean session, assign:
### Primary root cause
One of:
- `SPEC_AMBIGUITY`
- `HUMAN_SCOPE_CHANGE`
- `REPO_FRAGILITY`
- `AGENT_ARCHITECTURAL_ERROR`
- `VERIFICATION_CHURN`
- `LEGITIMATE_TASK_COMPLEXITY`
### Secondary root cause
Optional if materially relevant
### Root-cause guidance
- **SPEC_AMBIGUITY**: opening ask lacked boundaries, targets, criteria, or constraints
- **HUMAN_SCOPE_CHANGE**: scope expanded because the user broadened the task
- **REPO_FRAGILITY**: hidden coupling, brittle files, unclear architecture, or environment issues forced extra work
- **AGENT_ARCHITECTURAL_ERROR**: wrong files, wrong assumptions, wrong approach, hallucinated structure
- **VERIFICATION_CHURN**: implementation mostly worked, but testing/validation caused loops
- **LEGITIMATE_TASK_COMPLEXITY**: revisions were expected for the difficulty and not clearly avoidable
Every root-cause assignment must include:
- evidence
- why stronger alternative causes were rejected
- confidence
---
## Step 6.5: Session Severity Scoring (0–100)
Assign each session a severity score to prioritize attention.
Components (sum, clamp 0–100):
- **Completion failure**: 0–25 (`abandoned = 25`)
- **Replanning intensity**: 0–15
- **Scope instability**: 0–15
- **Rework shape severity**: 0–15
- **Prompt sufficiency deficit**: 0–10 (`low = 10`)
- **Root cause impact**: 0–10 (`REPO_FRAGILITY` / `AGENT_ARCHITECTURAL_ERROR` highest)
- **Hotspot recurrence**: 0–10
Bands:
- **0–19 Low**
- **20–39 Moderate**
- **40–59 Significant**
- **60–79 High**
- **80–100 Critical**
Record:
- `session_severity_score`
- `severity_band`
- `severity_drivers` = top 2–4 contributors
- `severity_confidence`
Use severity as a prioritization signal, not a verdict. Always explain the drivers.
Contextualize severity using session intent so research/exploration sessions are not over-penalized.
---
## Step 7: Subsystem / File Clustering
Across all conversations, cluster repeated struggle by file, folder, or subsystem.
For each cluster, calculate:
- number of conversations touching it
- average revisions
- completion rate
- abandonment rate
- common root causes
- average severity
Goal: identify whether friction is mostly prompt-driven, agent-driven, or concentrated in specific repo areas.
---
## Step 8: Comparative Cohorts
Compare:
- first-shot successes vs re-planned sessions
- completed vs abandoned
- high prompt sufficiency vs low prompt sufficiency
- narrow-scope vs high-scope-growth
- short sessions vs long sessions
- low-friction subsystems vs high-friction subsystems
For each comparison, identify:
- what differs materially
- which prompt traits correlate with smoother execution
- which repo traits correlate with repeated struggle
Do not just restate averages; extract cautious evidence-backed patterns.
---
## Step 9: Non-Obvious Findings
Generate 3–7 findings that are not simple metric restatements.
Each finding must include:
- observation
- why it matters
- evidence
- confidence
Examples of strong findings:
- replans cluster around weak file targeting rather than weak acceptance criteria
- scope growth often begins after initial success, suggesting post-success human expansion
- auth-related struggle is driven more by repo fragility than agent hallucination
---
## Step 10: Report Generation
Create `session_analysis_report.md` with this structure:
# 📊 Session Analysis Report — [Project Name]
**Generated**: [timestamp]
**Conversations Analyzed**: [N]
**Date Range**: [earliest] → [latest]
## Executive Summary
| Metric | Value | Rating |
|:---|:---|:---|
| First-Shot Success Rate | X% | 🟢/🟡/🔴 |
| Completion Rate | X% | 🟢/🟡/🔴 |
| Avg Scope Growth | X% | 🟢/🟡/🔴 |
| Replan Rate | X% | 🟢/🟡/🔴 |
| Median Duration | Xm | — |
| Avg Session Severity | X | 🟢/🟡/🔴 |
| High-Severity Sessions | X / N | 🟢/🟡/🔴 |
Thresholds:
- First-shot: 🟢 >70 / 🟡 40–70 / 🔴 <40
- Scope growth: 🟢 <15 / 🟡 15–40 / 🔴 >40
- Replan rate: 🟢 <20 / 🟡 20–50 / 🔴 >50
Avg severity guidance:
- 🟢 <25
- 🟡 25–50
- 🔴 >50
Note: avg severity is an aggregate health signal, not the same as per-session severity bands.
Then add a short narrative summary of what is going well, what is breaking down, and whether the main issue is prompt quality, repo fragility, workflow discipline, or validation churn.
## Root Cause Breakdown
| Root Cause | Count | % | Notes |
|:---|:---|:---|:---|
## Prompt Sufficiency Analysis
- common traits of high-sufficiency prompts
- common missing inputs in low-sufficiency prompts
- which missing prompt ingredients correlate most with replanning or abandonment
## Scope Change Analysis
Separate:
- Human-added scope
- Necessary discovered scope
- Agent-introduced scope
## Rework Shape Analysis
Summarize the main failure patterns across sessions.
## Friction Hotspots
Show the files/folders/subsystems most associated with replanning, abandonment, verification churn, and high severity.
## First-Shot Successes
List the cleanest sessions and extract what made them work.
## Non-Obvious Findings
List 3–7 evidence-backed findings with confidence.
## Severity Triage
List the highest-severity sessions and say whether the best intervention is:
- prompt improvement
- scope discipline
- targeted skill/workflow
- repo refactor / architecture cleanup
- validation/test harness improvement
## Recommendations
For each recommendation, use:
- **Observed pattern**
- **Likely cause**
- **Evidence**
- **Change to make**
- **Expected benefit**
- **Confidence**
## Per-Conversation Breakdown
| # | Title | Intent | Duration | Scope Δ | Plan Revs | Task Revs | Root Cause | Rework Shape | Severity | Complete? |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
---
## Step 11: Optional Post-Analysis Improvements
If appropriate, also:
- update any local project-health or memory artifact (if present) with recurring failure modes and fragile subsystems
- generate `prompt_improvement_tips.md` from high-sufficiency / first-shot-success sessions
- suggest missing skills or workflows when the same subsystem or task sequence repeatedly causes struggle
Only recommend workflows/skills when the pattern appears repeatedly.
---
## Final Output Standard
The workflow must produce:
1. metrics summary
2. root-cause diagnosis
3. prompt-sufficiency assessment
4. subsystem/friction map
5. severity triage and prioritization
6. evidence-backed recommendations
7. non-obvious findings
Prefer explicit uncertainty over fake precision.
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