Deliver final advanced governance, ownership, and reporting feature set

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: ["**"]
+  pull_request:
+
+jobs:
+  backend-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+      - name: Install dependencies
+        run: |
+          cd backend
+          pip install -r requirements.txt
+      - name: Syntax check
+        run: |
+          python -m compileall backend/app
+
+  frontend-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+      - name: Install dependencies
+        run: |
+          cd frontend
+          npm ci
+      - name: Lint
+        run: |
+          cd frontend
+          npm run lint
+      - name: Build
+        run: |
+          cd frontend
+          npm run build

.gitignore

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+# Node
+node_modules/
+.next/
+out/
+
+# Python
+__pycache__/
+*.pyc
+.venv/
+
+# Env
+.env
+
+# OS
+.DS_Store

README.md

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+# Developer Trust & Code Reliability Platform
+
+A full-stack platform for commit risk analysis, trust scoring, explainable AI, CI insights, and governance-oriented merge control.
+
+## Monorepo Structure
+
+```text
+frontend/      # Next.js 14 dashboard UI
+backend/       # FastAPI service with analytics endpoints
+ai-engine/     # Risk scoring logic and model stubs
+ci/            # CI/CD support assets
+database/      # SQL schema
+cloud/         # Cloud integration notes
+docs/          # Architecture, roadmap, API catalog
+.github/       # GitHub Actions workflows
+```
+
+## Advanced Features Implemented
+
+- Predictive risk scoring before CI starts
+- What-if commit simulation endpoint for pre-merge planning
+- Explainable AI reason panel for risk changes
+- Code ownership + blast radius endpoint and UI
+- Trust-based merge gate evaluation + policy endpoints and UI
+- Role-based dashboards (Developer, Manager, Admin)
+- Research comparison endpoint (before vs after Trust Loop)
+- Semester CSV report export endpoint
+- CI time/cost optimization insights
+- Simulated webhook ingestion endpoint for new commits
+
+## Quick Start
+
+### Backend
+
+```bash
+cd backend
+python -m venv .venv && source .venv/bin/activate
+pip install -r requirements.txt
+uvicorn app.main:app --reload --port 8000
+```
+
+### Frontend
+
+```bash
+cd frontend
+npm install
+npm run dev
+```
+
+Set `NEXT_PUBLIC_API_BASE_URL=http://localhost:8000` in `frontend/.env.local`.

ai-engine/README.md

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+# AI Engine
+
+This module contains scoring logic prototypes and placeholders for model training.
+
+## Planned Upgrades
+- Train a calibrated failure predictor from commit + CI metadata.
+- Add SHAP-based feature attributions for richer explainability.
+- Export model as a service used by FastAPI.

ai-engine/risk_model.py

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+"""Standalone risk model stub for experimentation."""
+
+from dataclasses import dataclass
+
+
+@dataclass
+class Features:
+    files_changed: int
+    modules_impacted: int
+    tests_touched: bool
+    historical_failure_rate: float
+
+
+def predict_failure_probability(features: Features) -> float:
+    score = 0.02 * features.files_changed + 0.06 * features.modules_impacted
+    score += 0.21 if not features.tests_touched else 0.0
+    score += 0.35 * features.historical_failure_rate
+    return max(0.01, min(round(score, 3), 0.97))

backend/app/data.py

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+from app.schemas import Commit
+
+COMMITS: list[Commit] = [
+    Commit(
+        id="cmt-101",
+        author="Ayesha",
+        message="Refactor auth middleware and token parser",
+        files_changed=11,
+        modules_impacted=4,
+        tests_touched=False,
+        historical_failure_rate=0.42,
+    ),
+    Commit(
+        id="cmt-102",
+        author="Rahul",
+        message="Fix flaky checkout flow assertions",
+        files_changed=3,
+        modules_impacted=1,
+        tests_touched=True,
+        historical_failure_rate=0.18,
+    ),
+    Commit(
+        id="cmt-103",
+        author="Mei",
+        message="Add caching for analytics endpoint",
+        files_changed=7,
+        modules_impacted=3,
+        tests_touched=True,
+        historical_failure_rate=0.27,
+    ),
+]
+
+DEPENDENCY_GRAPH = {
+    "auth": ["api-gateway", "session", "billing"],
+    "checkout": ["cart", "payments", "inventory", "pricing"],
+    "analytics": ["warehouse", "dashboard"],
+}
+
+RESEARCH_BASELINE = {
+    "avg_risk_before": 68.4,
+    "avg_risk_after": 44.2,
+    "trust_gain_percent": 23.1,
+    "deployment_failure_drop_percent": 31.6,
+}