---
phase: 01-symbol-disambiguation
plan: 01
subsystem: query
tags: [disambiguation, symbol-resolution, kind-tier, csharp, java, kotlin]

# Dependency graph
requires: []
provides:
  - "kind_disambiguation_tier function with 4-tier priority system"
  - "Updated resolve_symbol_selector with tier-based auto-disambiguation"
  - "7 tests covering tier values and cross-kind disambiguation scenarios"
affects: [02-hook-reliability]

# Tech tracking
tech-stack:
  added: []
  patterns: ["kind-tier priority for symbol disambiguation"]

key-files:
  created: []
  modified: ["src/live_index/query.rs"]

key-decisions:
  - "4-tier system (type defs > modules > callables > other) replaces binary container-vs-member heuristic"
  - "Pre-existing rustfmt issues across codebase fixed in same plan to unblock CI"

patterns-established:
  - "Kind-tier disambiguation: lower tier number = higher priority for auto-selection"

requirements-completed: [SYMB-01, SYMB-02, SYMB-03]

# Metrics
duration: 6min
completed: 2026-03-20
---

# Phase 01 Plan 01: Symbol Disambiguation Summary

**4-tier kind-priority system in resolve_symbol_selector that auto-disambiguates cross-kind name collisions (e.g. C# class vs constructor)**

## Performance

- **Duration:** 6 min
- **Started:** 2026-03-20T09:53:52Z
- **Completed:** 2026-03-20T10:00:10Z
- **Tasks:** 2
- **Files modified:** 17 (1 for feature, 16 for pre-existing formatting)

## Accomplishments
- Replaced binary container-vs-member heuristic with 4-tier kind-priority system
- C# class lookup with same-named constructor now auto-resolves to the class (SYMB-02)
- Three-way disambiguation (Class + Module + Function) correctly picks Class (tier 1)
- Same-tier collisions still produce Ambiguous with candidate lines (SYMB-03)
- Full test suite passes (1185 lib + 131 integration tests, 0 failures)

## Task Commits

Each task was committed atomically:

1. **Task 1 (RED): Add failing tests** - `16c10a8` (test)
2. **Task 1 (GREEN): Implement tier disambiguation** - `d8b53e5` (feat)
3. **Task 2: Fix formatting, verify full suite** - `0ad9ced` (chore)

## Files Created/Modified
- `src/live_index/query.rs` - Added `kind_disambiguation_tier` function and updated `resolve_symbol_selector` to use tier-based disambiguation; added 7 new tests
- 16 other `.rs` files - Pre-existing `cargo fmt` fixes

## Decisions Made
- 4-tier system chosen over extending the binary container heuristic: type definitions (tier 1) > modules (tier 2) > callables (tier 3) > everything else (tier 4). This is a strict superset of the old heuristic that additionally handles multi-container scenarios (e.g. Class + Module)
- Pre-existing rustfmt issues across 16 files were fixed as part of Task 2's formatting verification, since CI requires `cargo fmt -- --check` to pass

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 1 - Bug] Fixed ParseStatus::Full to ParseStatus::Parsed in tests**
- **Found during:** Task 1 (TDD RED phase)
- **Issue:** Plan used `ParseStatus::Full` which does not exist; the correct variant is `ParseStatus::Parsed`
- **Fix:** Changed all 6 test occurrences to use `ParseStatus::Parsed`
- **Files modified:** src/live_index/query.rs
- **Verification:** Tests compile and execute correctly
- **Committed in:** 16c10a8 (Task 1 RED commit)

**2. [Rule 3 - Blocking] Fixed pre-existing cargo fmt failures across 16 files**
- **Found during:** Task 2 (formatting verification)
- **Issue:** `cargo fmt -- --check` failed due to formatting issues in files modified by prior commits (d13e76b and earlier)
- **Fix:** Ran `cargo fmt` to fix all formatting
- **Files modified:** 16 .rs files (hook.rs, daemon.rs, tools.rs, format.rs, etc.)
- **Verification:** `cargo fmt -- --check` exits 0
- **Committed in:** 0ad9ced (Task 2 commit)

---

**Total deviations:** 2 auto-fixed (1 bug, 1 blocking)
**Impact on plan:** Both fixes necessary for correctness and CI compliance. No scope creep.

## Issues Encountered
None beyond the auto-fixed deviations above.

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- Symbol disambiguation complete for all 15 SymbolKind variants
- Phase 2 (hook reliability) can proceed independently
- No blockers or concerns

## Self-Check: PASSED

- FOUND: src/live_index/query.rs
- FOUND: .planning/phases/01-symbol-disambiguation/01-01-SUMMARY.md
- FOUND: commit 16c10a8
- FOUND: commit d8b53e5
- FOUND: commit 0ad9ced

---
*Phase: 01-symbol-disambiguation*
*Completed: 2026-03-20*
