refactor: simplify PR review to primary verifier flow

[jaibhasin]

Summary

Replaces router-driven specialist fan-out with one primary reviewer across selected bundles, followed by the existing verifier.
Removes obsolete specialist routing and task code, and reports a single Precision review status.
Preserves AGENTS.md prompt and tool protections, while updating tests, Action metadata, README, and the future-work checklist.
Validated with cargo fmt, cargo clippy, and 56 passing tests.

Summary by CodeRabbit

• New Features

  • Introduced a precision-first review workflow that evaluates all selected changes together.
  • Added bounded, read-only repository inspection for more focused reviews.
  • Prevented review tools from accessing agent-instruction files.

• Improvements

  • Consolidated results into a single Precision review section.
  • Updated configuration and action descriptions to reflect the primary review model.
  • Added guidance for future review optimizations and evaluation.

• Documentation

  • Revised architecture, configuration, output, and source-boundary documentation.

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Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 2ffd2235-d0be-403e-a0ff-a75d77aaeb50

📥 Commits

Reviewing files that changed from the base of the PR and between 5634190 and 750e1bf.

📒 Files selected for processing (22)

• README.md
• action.yml
• docs/research/future_checklist.md
• src/agents/integration_tests.rs
• src/agents/mod.rs
• src/agents/prompts/mod.rs
• src/agents/prompts/primary.rs
• src/agents/prompts/router.rs
• src/agents/prompts/specialists.rs
• src/agents/router.rs
• src/agents/tasks.rs
• src/main.rs
• src/reporting/anchors.rs
• src/reporting/summary.rs
• src/reporting/summary_tests.rs
• src/repository/mod.rs
• src/repository/tests.rs
• src/repository/tools.rs
• src/review/contextual.rs
• src/review/contextual_tests.rs
• src/review/legacy.rs
• src/types.rs

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📝 Walkthrough

Walkthrough

Changes

Primary Reviewer Consolidation

Layer / File(s)	Summary
Primary review contracts and boundaries src/types.rs, src/agents/prompts/*, src/repository/*	Review execution now uses one Primary agent, a dedicated prompt, and reviewer tool validation that blocks direct AGENTS.md access.
Single-review execution and verification src/agents/*, src/review/*	Selected bundles are submitted in one primary-review request, findings are normalized and verified independently, and failures or empty selections update run status accordingly.
Precision reporting and validation src/reporting/*, src/review/contextual_tests.rs	Output now contains a single Precision review section, with tests updated for the Primary agent and removed router-fallback state.
Product and workflow documentation README.md, action.yml, src/main.rs, docs/research/*	Project descriptions, configuration text, CLI help, review-output behavior, and future workflow notes describe the primary-review architecture.

Estimated code review effort: 4 (Complex) | ~45 minutes

Sequence Diagram(s)

sequenceDiagram
  participant ReviewBundles
  participant PrimaryReviewer
  participant Verifier
  participant ReviewPublisher
  ReviewBundles->>PrimaryReviewer: submit selected bundles
  PrimaryReviewer-->>ReviewBundles: return candidate findings
  ReviewBundles->>Verifier: verify findings
  Verifier-->>ReviewPublisher: provide verified findings
  ReviewPublisher-->>ReviewPublisher: render Precision review

Loading

Possibly related PRs

• jaibhasin/PRBot#3: Directly overlaps with review orchestration, contrasting this single-primary flow with a multi-agent contextual pipeline.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch jaibhasin/analyze-slow-pr-reviews

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