# Implementation: Fix Verdict Parsing and State Machine Alignment

## Summary
- Added `parse_verdict_status()` function to `task.py` that uses structured status-line parsing (`## Status:`, `- **Status**:`) before falling back to substring search
- Fixed `determine_task_state()` to use structured verdict parsing, eliminating false-BLOCKED classification when PASS verdicts discuss failures
- Aligned state machine with orchestrator spec: IMPLEMENTATION.md alone → BUG_FIND (not IMPLEMENT), ADVERSARIAL_BUG_REPORT alone → BUG_FIND (not ADV_BUG_FIND)
- Added filesystem-sourced task name validation in `discover_tasks()` and `parse_sub_tasks()` — directories with characters outside `[A-Za-z0-9_-]` are skipped
- Added comprehensive test classes: `TestVerdictParsing`, `TestStateMachineAlignment`, `TestTaskNameValidation`
- Updated existing `test_implementation_state` to reflect new state machine behavior

## Changes
- `automaton/dashboard/core/task.py`: Added `parse_verdict_status()`, `_VALID_TASK_NAME_CHARS`, rewrote `determine_task_state()`, added name validation to `discover_tasks()` and `parse_sub_tasks()`
- `tests/test_task.py`: Added 16 new tests, updated 1 existing test

## Test Results
90 passed in 0.06s (full suite)

## Decisions
- Kept substring fallback for unstructured verdicts for backward compatibility
- ADVERSARIAL_BUG_REPORT alone now maps to BUG_FIND (not ADV_BUG_FIND) per orchestrator spec clarification
- State machine checks are: DOC_REVIEW → both bug reports → BUG_REPORT alone → ADV alone → IMPLEMENTATION alone → TEST_PLAN → DESIGN → DECOMPOSITION → SPEC → BACKLOG

## Blockers
None