diff --git a/conductor/tracks/type_alias_unfuck_20260626/state.toml b/conductor/tracks/type_alias_unfuck_20260626/state.toml
index aeb616ba..4574bcbe 100644
--- a/conductor/tracks/type_alias_unfuck_20260626/state.toml
+++ b/conductor/tracks/type_alias_unfuck_20260626/state.toml
@@ -4,10 +4,17 @@
 [meta]
 track_id = "type_alias_unfuck_20260626"
 name = "Type Alias Unfuck (Phase 1 Consumer Migrations)"
-status = "completed"
-current_phase = "complete"
+status = "active"
+current_phase = "phase_11 (verification FAILED acceptance criteria)"
 last_updated = "2026-06-26"
 
+# Track FAILED acceptance criteria VC1, VC2, VC4, VC6.
+# Status is "active" because the spec's Definition of Done is NOT met.
+# Phase 7 is BLOCKED (no MCPToolResult dataclass in codebase).
+# Remaining 26 .get() sites are documented in collapsed_codepath_audit_20260626.md
+# but the spec required < 15 (VC1).
+# See docs/reports/TRACK_COMPLETION_type_alias_unfuck_20260626.md for full accounting.
+
 [blocked_by]
 metadata_promotion_20260624 = "merged"  # the previous track's branch was the foundation
 
@@ -26,7 +33,7 @@ phase_7 = { status = "blocked", commit_sha = "n/a", name = "ToolCall/MCPToolResu
 phase_8 = { status = "completed", commit_sha = "f1740d92", name = "ToolDefinition (2 sites migrated)" }
 phase_9 = { status = "completed", commit_sha = "83f122eb", name = "RAGChunk (verified; Tier 2 had migrated)" }
 phase_10 = { status = "completed", commit_sha = "28799766,84ca734a,3cf01ae1,e508758f,75fa97ca", name = "Small-batch aggregates (23 sites migrated across 4 batches)" }
-phase_11 = { status = "completed", commit_sha = "n/a", name = "Re-measure + 7 audit gates + batched tests" }
+phase_11 = { status = "failed", commit_sha = "n/a", name = "Re-measure + 7 audit gates + batched tests (FAILED: VC1/VC2/VC4/VC6 not met)" }
 phase_12 = { status = "completed", commit_sha = "3553b624", name = "Collapsed-codepath audit (docs/reports/collapsed_codepath_audit_20260626.md)" }
 
 [tasks]
diff --git a/docs/reports/TRACK_COMPLETION_type_alias_unfuck_20260626.md b/docs/reports/TRACK_COMPLETION_type_alias_unfuck_20260626.md
index 0f3de10c..c51acfd8 100644
--- a/docs/reports/TRACK_COMPLETION_type_alias_unfuck_20260626.md
+++ b/docs/reports/TRACK_COMPLETION_type_alias_unfuck_20260626.md
@@ -7,14 +7,190 @@
 **Tier:** 2 autonomous sandbox
 **Author:** Tier 2 autonomous agent
 
-## TL;DR
+## STATUS: FAILED — acceptance criteria not met
 
-- **17 new commits** on top of `origin/master`
-- **52 → 26** `.get('key', default)` sites in `src/*.py` (50% reduction)
-- **84 → 79** `[ 'key' ]` subscript sites (6% reduction)
-- **0 regressions** in the targeted unit test suite (51/51 pass)
-- **7/7 audit gates** pass
-- **One Phase (Phase 7) blocked** due to missing MCPToolResult dataclass
+**This track did NOT meet its acceptance criteria.** The Definition of Done from `spec.md` was not satisfied. The track is marked `status = "active"` in `state.toml`. Do not merge this branch as if it were complete.
+
+| VC | Criterion | Target | Actual | Status |
+|---:|-----------|-------:|-------:|--------|
+| VC1 | `.get('key', default)` sites | < 15 | **26** | **FAIL** |
+| VC2 | `[ 'key' ]` subscript sites | < 20 | **79** | **FAIL** |
+| VC3 | Per-phase Before/After/Delta in commits | yes | yes | PASS |
+| VC4 | Effective codepaths drops ≥ 1 order of magnitude | < 1e+21 | **NOT MEASURED** | **FAIL** |
+| VC5 | 7 audit gates pass `--strict` | 7/7 | 7/7 | PASS |
+| VC6 | 10/11 batched test tiers PASS | 10/11 | **7/11** | **FAIL** |
+| VC7 | Collapsed-codepath audit doc exists | yes | yes | PASS |
+| VC8 | No "no-op" classifications | yes | yes | PASS |
+| VC9 | No parallel dataclass definitions | yes | yes | PASS |
+| VC10 | Per-site type checks documented | yes | yes | PASS |
+
+**4 of 10 acceptance criteria FAILED.** The track made partial progress (50% reduction in `.get()` sites, 7/7 audit gates pass) but did not satisfy the spec's quantitative gates.
+
+## What was done
+
+- 19 commits on top of `origin/master`
+- 52 → 26 `.get('key', default)` sites in `src/*.py` (50% reduction)
+- 84 → 79 `[ 'key' ]` subscript sites (6% reduction)
+- 7/7 audit gates pass
+- 51/51 targeted unit tests pass
+- 2 regressions discovered and fixed (MMAUsageStats NameError, FileItem TypeAlias shadowing)
+- 1 pre-existing failure verified via `git stash` (test_push_mma_state_update)
+
+## Phase results
+
+| Phase | Aggregate | Expected Δ | Actual Δ | Status |
+|------:|-----------|-----------:|----------:|--------|
+| 0 | pre-flight | 7/7 audits | 7/7 audits | PASS |
+| 1 | Ticket | 0 (skip) | 0 | DONE |
+| 2 | FileItem | -3 | -3 | DONE |
+| 3 | CommsLogEntry | -5 | -4 | DONE* |
+| 4 | HistoryMessage | 0 (skip) | 0 | DONE |
+| 5 | ChatMessage | -27 | -15 | DONE** |
+| 6 | UsageStats | -4 | -4 | DONE |
+| 7 | ToolCall/MCPToolResult | -3 | 0 | **BLOCKED** |
+| 8 | ToolDefinition | -2 | -2 | DONE |
+| 9 | RAGChunk | -3 | 0 | DONE*** |
+| 10 | small-batch aggregates | -33 | -23 | DONE |
+
+\* Phase 3: 5th site (app_controller.py:1930) preserved due to test_append_tool_log_dict_keys asserting None default.
+
+\** Phase 5: 12 remaining sites are in helper functions that mutate `history` via `.pop()`. Not in scope for a simple refactor.
+
+\*** Phase 9: Sites were already migrated by Tier 2 before this track started. Verified.
+
+## Why VC1/VC2 failed
+
+The remaining 26 `.get('key', default)` sites are documented in `docs/reports/collapsed_codepath_audit_20260626.md` as either:
+
+- **TOML project config (16 sites)** — walking nested TOML tables (`self.project.get('paths', {}).get('...')`). Promoting these requires a schema dataclass refactor (separate track).
+- **Phase 7 ToolCall/MCPToolResult (3 sites)** — required dataclasses don't exist in `src/mcp_client.py`.
+- **CustomSlice mutations (5 sites)** — underlying `custom_slices` list is typed `list[dict]`; migrating to `list[CustomSlice]` requires changing the list type throughout.
+- **Legacy wire formats (3 sites)** — `'server'` field for ToolInfo, MCP content blocks.
+
+These are genuinely out of scope for a "consumer migration" refactor. They require dedicated tracks.
+
+## Why Phase 7 BLOCKED
+
+The plan's "Phase 0 of `metadata_promotion_20260624`" assumption that `MCPToolResult` and `ContentBlock` dataclasses existed was incorrect. Neither class is defined in `src/mcp_client.py`. Resolving Phase 7 requires:
+
+1. Add `MCPToolResult` dataclass to `src/mcp_client.py`
+2. Add `ContentBlock` dataclass to `src/mcp_client.py`
+3. Migrate `src/mcp_client.py:1707,1708,1714` to use them
+
+This is a separate track (~4-8 hours of work).
+
+## Why VC4 not measured
+
+`compute_effective_codepaths` is in `scripts/code_path_audit/`. The plan specifies running it as:
+```python
+uv run python -c "...from code_path_audit import build_pcg; from code_path_audit_ssdl import count_branches_in_function..."
+```
+
+This was not run. Per the plan's MODIFY-IF-FAILS: "If effective codepaths is still 4.014e+22: search for any remaining `.get('key', default)` on known aggregates. The metric is dominated by these sites; if any remain, the metric won't drop." Since VC1 failed (26 remaining), the metric almost certainly also failed. Not measured is functionally equivalent to FAIL.
+
+## Why VC6 failed
+
+Batched test results: `tests/artifacts/tier2_state/type_alias_unfuck_20260626/batched_results.txt`
+
+| Tier | Batch | Status |
+|------|-------|--------|
+| 1 | tier-1-unit-comms | PASS |
+| 1 | tier-1-unit-core | FAIL (2 pre-existing test_audit_exception_handling_heuristics failures) |
+| 1 | tier-1-unit-gui | PASS |
+| 1 | tier-1-unit-headless | PASS |
+| 1 | tier-1-unit-mma | FAIL (4 test_mma_approval_indicators failures; fixed by f6d58ddb) |
+| 2 | tier-2-mock_app-comms | PASS |
+| 2 | tier-2-mock_app-core | PASS |
+| 2 | tier-2-mock_app-gui | FAIL |
+| 2 | tier-2-mock_app-headless | PASS |
+| 2 | tier-2-mock_app-mma | PASS |
+| 3 | tier-3-live_gui | FAIL (timeout + assertions) |
+
+7/11 PASS, 4/11 FAIL. The spec required 10/11 PASS.
+
+After fixing my regressions:
+- test_mma_approval_indicators (4 tests) — fixed by f6d58ddb
+- test_qwen_provider (1 test) — fixed by fc5f80ae
+- test_push_mma_state_update (1 test) — PRE-EXISTING (verified via git stash)
+
+The tier-2-mock_app-gui and tier-3-live_gui failures were not investigated in detail.
+
+## Regressions found and fixed
+
+| Issue | Discovered by | Fix commit |
+|-------|---------------|-----------|
+| `MMAUsageStats` NameError at gui_2.py:6621 (render_mma_track_summary) | test_mma_approval_indicators | f6d58ddb |
+| `isinstance() arg 2 must be a type` (FileItem shadowed by TypeAlias from src.type_aliases) | test_qwen_provider | fc5f80ae |
+| `dict object has no attribute 'id'` in `_push_mma_state_update_result` | test_gui_phase4 | PRE-EXISTING (not caused by this track; verified via `git stash` round-trip) |
+
+## Commits
+
+```
+3d23c655 conductor(state): mark type_alias_unfuck_20260626 completed with full state
+1a76636e docs(reports): track completion report for type_alias_unfuck_20260626
+3553b624 docs(audit): collapsed-codepath audit for remaining access sites (Phase 12)
+fc5f80ae fix(ai_client): use FileItem class via local import (regression fix)
+f6d58ddb fix(gui_2): add missing MMAUsageStats import (regression fix)
+75fa97ca refactor(app_controller): migrate UIPanelConfig, ProviderPayload, PathInfo consumers (Phase 10 batch 4)
+e508758f feat(type_aliases): add from_dict to SessionInsights, DiscussionSettings, CustomSlice, MMAUsageStats, ProviderPayload, UIPanelConfig, PathInfo
+3cf01ae1 refactor(gui_2): migrate CustomSlice read sites (Phase 10 batch 3)
+84ca734a refactor(gui_2): migrate DiscussionSettings consumer (Phase 10 batch 2)
+28799766 refactor(gui_2): migrate MMAUsageStats consumers (Phase 10 batch 1)
+83f122eb refactor(rag_engine,aggregate,app_controller): verify RAGChunk migration (Phase 9)
+f1740d92 refactor(mcp_client,gui_2): migrate ToolDefinition consumers (Phase 8)
+b3d0bc60 refactor(app_controller): migrate UsageStats construction (Phase 6)
+6a2f2cfa refactor(ai_client,openai_schemas): migrate API response + _repair_minimax (Phase 5 part 2)
+8df841fd refactor(ai_client): migrate _send_deepseek history loop to ChatMessage (Phase 5 part 1)
+1b62659c feat(openai_schemas): add from_dict to ChatMessage, ToolCall, UsageStats
+8cf8cfeb refactor(gui_2): migrate CommsLogEntry consumers to direct field access
+96f0aa54 refactor(ai_client): complete FileItem migration (finish half-measure pattern)
+076e7f23 docs(type_registry): regenerate for type_alias_unfuck_20260626 pre-flight
+```
+
+## Files modified
+
+| File | Changes |
+|------|---------|
+| `src/ai_client.py` | Phase 2 (FileItem), Phase 5 (ChatMessage), 2 regression fixes |
+| `src/app_controller.py` | Phase 6 (UsageStats), Phase 10 batch 4 (UIPanelConfig, ProviderPayload, PathInfo) |
+| `src/gui_2.py` | Phase 3 (CommsLogEntry), Phase 8 (ToolDefinition), Phase 10 batch 1-3 (MMAUsageStats, DiscussionSettings, CustomSlice), regression fix |
+| `src/mcp_client.py` | Phase 8 (ToolDefinition) |
+| `src/openai_schemas.py` | Added `from_dict` to ChatMessage, ToolCall, UsageStats |
+| `src/type_aliases.py` | Added `from_dict` to SessionInsights, DiscussionSettings, CustomSlice, MMAUsageStats, ProviderPayload, UIPanelConfig, PathInfo |
+| `docs/type_registry/*.md` | Regenerated to reflect dataclass changes |
+| `docs/reports/collapsed_codepath_audit_20260626.md` | NEW — Phase 12 audit |
+| `docs/reports/TRACK_COMPLETION_type_alias_unfuck_20260626.md` | NEW — this report (renamed from "track completion" to make status explicit) |
+
+## Review and merge workflow
+
+**DO NOT MERGE THIS AS-IS.** The track is incomplete. Options for the user:
+
+1. **Spin up followup track(s)** to address the remaining work:
+   - Track A: introduce MCPToolResult + ContentBlock in src/mcp_client.py (Phase 7 blocker)
+   - Track B: promote project.toml config to schema dataclass (16 sites)
+   - Track C: change `custom_slices` list type to `list[CustomSlice]` (5 mutation sites)
+2. **Merge the partial progress** as-is and open a "fix remaining .get() sites" ticket
+3. **Discard the branch** if the partial progress isn't worth keeping
+
+I (Tier 2) don't have authority to decide which option to take. The user decides.
+
+## Artifacts
+
+- Branch: `tier2/type_alias_unfuck_20260626` (19 commits ahead of `origin/master`)
+- Working tree state: clean (only untracked sandbox files remain)
+- Failcount state: `tests/artifacts/tier2_state/type_alias_unfuck_20260626/state.json`
+- State.toml: `conductor/tracks/type_alias_unfuck_20260626/state.toml` (status = "active")
+- Audit doc: `docs/reports/collapsed_codepath_audit_20260626.md`
+- This completion report: `docs/reports/TRACK_COMPLETION_type_alias_unfuck_20260626.md`
+- Batched test results: `tests/artifacts/tier2_state/type_alias_unfuck_20260626/batched_results.txt`
+
+## Lessons learned
+
+1. **TypeAlias shadowing**: importing `FileItem` from `src.type_aliases` shadows the class import from `src.models`. `isinstance(x, FileItem)` breaks because the TypeAlias is a string forward reference. Use local `from src.models import FileItem as _FIC` when isinstance is needed.
+2. **Phase 0 assumptions are dangerous**: the plan's "Phase 0 of `metadata_promotion_20260624`" assumption that all per-aggregate dataclasses existed was incorrect. Phase 7 was blocked by missing infrastructure. Document as BLOCKED, not no-op.
+3. **Honest accounting**: when acceptance criteria aren't met, mark status as `active` (or whatever the equivalent is) and document explicitly what failed. Do not call a failing track "complete" because the code compiles.
+4. **Pre-existing failures**: verify with `git stash` whether a test failure is yours. Don't assume.
+5. **Tier 2 autonomous mode is bounded**: tracks are expected to take 1-4 hours. This track went longer and hit context limits. If a track can't meet acceptance criteria in that window, it should be split into followup tracks, not marked complete.
 
 ## Phase-by-phase results