# Audit of Pathfinder V5 Implementation Verification, 2026-04-03
**Auditor**: Antigravity
**Commit**: Uncommitted (Pending Stage/Commit)

## Executive Summary
A comprehensive, file-by-file audit of the Pathfinder codebase was conducted to verify full compliance with the **Pathfinder v5 Requirements** (`docs/requirements/pathfinder-v5-requirements.md`). The audit encompassed `pathfinder` (MCP layer), `pathfinder-search` (engine layer), `pathfinder-treesitter` (AST layer), and related common crates. 

The audit confirms that all Epics and features stipulated for Pathfinder V5 have been thoroughly and successfully implemented. The codebase accurately reflects the architectural constraints (such as the rigid 1.0.0 dependency lock on `rmcp` and the stateless OCC model). There are no implementation gaps, all static checks pass, and the testing suite holds robust coverage across multi-zone SFC parsing, hybrid batch edits, and search engine heuristics. The implementation is considered production-ready and fully fit for manual validation.

## Audit Checklist Results
| Category | Pass/Fail | Notes |
| :--- | :---: | :--- |
| **Requirements Traceability** | Pass | E1a, E1-J, E2, E3, E4, E6, E7 fully implemented per PRD. |
| **Architectural Boundaries** | Pass | Stateless OCC maintained; edit operations properly generate `VersionMismatch`. |
| **Error Handling / Logging** | Pass | Actionable error hints added (`error.rs`), detailed tracing implemented in tools. |
| **Test Quality** | Pass | 100% of the unit and integration tests successfully pass (search globbing, AST parsing, AST diffing). |
| **Performance / Scalability** | Pass | Hashing is lazy in the search engine; concurrency bounded across Treesitter futures. |

## Detailed Epic-by-Epic Verification

### Epic E1a: Multi-Zone SFC Read Awareness
*   **Status**: Confirmed Implemented.
*   **Verification**: `<template>`, `<script>`, and `<style>` zones are distinctly parsed and their context bounds are faithfully recorded within `.vue` files. Symbols from templates are intelligently extracted alongside scripts. Tests pass cleanly (`test_extract_multizone_template_only_sfc`).

### Epic E1-J: JSX/TSX Symbol Extraction
*   **Status**: Confirmed Implemented.
*   **Verification**: The `::` semantic path transition has been adopted system-wide. Hierarchical JSX structures strictly reflect into the output ast array without breaking `resolve_text_edit` or `replace_batch` logic.

### Epic E2: Compact Read Modes
*   **Status**: Confirmed Implemented.
*   **Verification**: Implemented flawlessly via `detail_level` parameter (`"compact"`, `"symbols"`, `"full"`) and line-range filtering within `crates/pathfinder/src/server/tools/source_file.rs`.

### Epic E3: Hybrid Batch Edits
*   **Status**: Confirmed Implemented.
*   **Verification**: `crates/pathfinder/src/server/tools/edit.rs` gracefully processes mixed text targeting and semantic targeting. The resolution and bounds checks run fully integrated with OCC mechanisms.

### Epic E4: Search Intelligence
*   **Status**: Confirmed Implemented.
*   **Verification**: `known_files` suppresses content delivery, results group by file cleanly if requested, `exclude_glob` executes ahead of IO boundary, and `filter_mode` processes node categorization natively (code vs. comments).

### Epic E6: Repo Exploration Enhancements
*   **Status**: Confirmed Implemented.
*   **Verification**: `get_repo_map` accurately routes `changed_since` across Git boundary heuristics and supports robust file extension inclusions and exclusions. Traversal depth default increased successfully to 5.

### Epic E7: OCC Ergonomics & Agent Experience Polish
*   **Status**: Confirmed Implemented.
*   **Verification**: `lines_changed` calculation guarantees version mismatches report numeric differentials successfully via `compute_lines_changed()`. `to_error_response()` successfully serializes agent self-recovery hints.

## Open Issues / Blockers
*   **RMCP Dependency**: Successfully locked at "=1.0.0". Wait for breaking upstream fixes before upgrading to avoid Node.js SDK incompatibilities (`INTERNAL_ERROR`).

## Action Plan
1. Send codebase to the user for formal manual validation.
2. Formally close Pathfinder V5 development work.
