# FlowPilot Phase 8 — Fix Outcome Banner Implementation Plan

> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

**Goal:** Replace the task-lane Suggested Fix card with a chat-composer-anchored **Proposal Banner** that owns the full lifecycle of a proposed fix (Proposed → Verifying → Success / Failed / Partial / Dismissed), with explicit outcome tracking, AI chat-inferred outcomes via a new `[FIX_OUTCOME]` marker, and implicit signals wired to the Resolve / Escalate actions.

**Architecture:**
- Backend extends `session_suggested_fixes` with outcome columns (`status`, `applied_at`, `verified_at`, `partial_notes`, `failure_reason`) and adds a PATCH `/outcome` endpoint. `unified_chat_service` learns a new `[FIX_OUTCOME]` marker that writes outcome proposals (not terminal — engineer confirms). `ASSISTANT_SYSTEM_PROMPT` gains marker instructions in placeholder form (anti-parrot compliant).
- Frontend replaces `SuggestedFix.tsx` (task-lane card) with a new `ProposalBanner.tsx` docked above the chat composer. The banner is a state-driven component (`proposed | verifying | partial | ai_confirming | dismissed`) with a sibling `EscalateInterceptDialog` popover. AssistantChatPage orchestrates state transitions and wires the implicit signals (Resolve auto-success, Escalate intercept, post-apply-message nudge).

**Tech Stack:** Python 3.11 + FastAPI + SQLAlchemy 2.0 async + Alembic + Pydantic v2 (backend); React 19 + Vite + TypeScript + Tailwind v4 (frontend). pytest for backend tests; frontend verified via `tsc -b` + browser smoke-test (no unit-test harness for new components — the codebase has no component test pattern per the handoff note on Phase 7 visual verification).

**Design reference:** [mockups/06-slide-up-banner.html](mockups/06-slide-up-banner.html) (banner look & feel), [mockups/07-verify-states.html](mockups/07-verify-states.html) (Verifying / Partial / AI-inferred / Nudge / Escalate-intercept states).

---

## File Structure

### Backend — new
- `backend/alembic/versions/<hash>_fix_outcome_tracking.py` — migration
- `backend/tests/test_fix_outcome_endpoint.py` — endpoint integration test
- `backend/tests/test_fix_outcome_marker.py` — marker-parser test

### Backend — modified
- `backend/app/models/session_suggested_fix.py` — add outcome columns
- `backend/app/schemas/session_suggested_fix.py` — add `SessionSuggestedFixOutcomeRequest`, extend response with outcome fields
- `backend/app/api/endpoints/session_suggested_fixes.py` — add PATCH `/outcome` endpoint
- `backend/app/services/unified_chat_service.py` — add `[FIX_OUTCOME]` parser + persist step
- `backend/app/services/assistant_chat_service.py` — add `[FIX_OUTCOME]` instructions to `ASSISTANT_SYSTEM_PROMPT`
- `backend/tests/test_prompt_anti_parrot.py` — extend known-leaked-token list if needed

### Frontend — new
- `frontend/src/components/pilot/ProposalBanner.tsx` — state-driven banner, all five rendering states
- `frontend/src/components/pilot/EscalateInterceptDialog.tsx` — popover dialog
- `frontend/src/hooks/useFixOutcome.ts` — hook wrapping outcome state + patch call

### Frontend — modified
- `frontend/src/api/sessionSuggestedFixes.ts` — add `patchOutcome` method + extend `SessionSuggestedFix` type with outcome fields + export `FixStatus` type
- `frontend/src/pages/AssistantChatPage.tsx` — mount `ProposalBanner` above composer, wire state transitions, intercept Escalate, auto-mark success on Resolve-while-verifying, remove `suggestedFixSlot` prop usage
- `frontend/src/components/pilot/TaskLane.tsx` — stop passing `suggestedFixSlot` (leave prop in place for other callers, pass null)

### Frontend — deleted
- `frontend/src/components/pilot/sections/SuggestedFix.tsx` — superseded by the banner; delete after integration is verified

---

## Task 1: DB migration + model extension for outcome tracking

**Files:**
- Create: `backend/alembic/versions/<hash>_fix_outcome_tracking.py`
- Modify: `backend/app/models/session_suggested_fix.py`

- [ ] **Step 1: Generate the migration file**

From `backend/` with venv active:

```bash
alembic revision -m "add fix outcome tracking columns to session_suggested_fixes"
```

Alembic prints the new file path. Do NOT pass `--rev-id` (Lesson: always let alembic generate the hex hash).

- [ ] **Step 2: Write the migration body**

Replace the generated file contents with (keep the `revision`/`down_revision` lines alembic wrote):

```python
"""add fix outcome tracking columns to session_suggested_fixes

Adds: status, applied_at, verified_at, partial_notes, failure_reason,
ai_outcome_proposal.
status is the outcome dimension (did the fix work?), orthogonal to the
existing user_decision column (which script-path the engineer took).
"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql


# revision identifiers — leave whatever alembic generated in place
revision = "<hash-alembic-generated>"
down_revision = "<parent>"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column(
        "session_suggested_fixes",
        sa.Column(
            "status",
            sa.String(length=20),
            nullable=False,
            server_default=sa.text("'proposed'"),
        ),
    )
    op.add_column(
        "session_suggested_fixes",
        sa.Column("applied_at", sa.DateTime(timezone=True), nullable=True),
    )
    op.add_column(
        "session_suggested_fixes",
        sa.Column("verified_at", sa.DateTime(timezone=True), nullable=True),
    )
    op.add_column(
        "session_suggested_fixes",
        sa.Column("partial_notes", sa.Text(), nullable=True),
    )
    op.add_column(
        "session_suggested_fixes",
        sa.Column("failure_reason", sa.Text(), nullable=True),
    )
    op.add_column(
        "session_suggested_fixes",
        sa.Column("ai_outcome_proposal", postgresql.JSONB(), nullable=True),
    )
    # Backfill before constraint creation so dismissed rows satisfy the new CHECK.
    op.execute(
        "UPDATE session_suggested_fixes "
        "SET status = 'dismissed' "
        "WHERE user_decision = 'dismissed'"
    )
    op.create_check_constraint(
        "ck_session_suggested_fixes_status",
        "session_suggested_fixes",
        "status IN ('proposed', 'applied_success', 'applied_failed', "
        "'applied_partial', 'dismissed')",
    )
    # Drop the server_default — application code owns defaults from here on
    # (matches the project's general pattern of keeping defaults in models).
    op.alter_column("session_suggested_fixes", "status", server_default=None)


def downgrade() -> None:
    op.drop_constraint("ck_session_suggested_fixes_status", "session_suggested_fixes", type_="check")
    op.drop_column("session_suggested_fixes", "ai_outcome_proposal")
    op.drop_column("session_suggested_fixes", "failure_reason")
    op.drop_column("session_suggested_fixes", "partial_notes")
    op.drop_column("session_suggested_fixes", "verified_at")
    op.drop_column("session_suggested_fixes", "applied_at")
    op.drop_column("session_suggested_fixes", "status")
```

- [ ] **Step 3: Update the SQLAlchemy model**

Edit `backend/app/models/session_suggested_fix.py`. Inside the `__table_args__` tuple, append after the existing `user_decision` check:

```python
        CheckConstraint(
            "status IN ('proposed', 'applied_success', 'applied_failed', "
            "'applied_partial', 'dismissed')",
            name="ck_session_suggested_fixes_status",
        ),
```

Inside the class body, add these columns after `user_decision`:

```python
    status: Mapped[str] = mapped_column(
        String(20), nullable=False, default="proposed"
    )
    applied_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )
    verified_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )
    partial_notes: Mapped[str | None] = mapped_column(Text, nullable=True)
    failure_reason: Mapped[str | None] = mapped_column(Text, nullable=True)
    ai_outcome_proposal: Mapped[dict[str, Any] | None] = mapped_column(
        JSONB, nullable=True
    )
```

- [ ] **Step 4: Apply the migration locally**

```bash
cd backend && alembic upgrade head
```

Expected: no errors; `\d session_suggested_fixes` in psql shows the five new columns and the new check constraint.

Verify via:

```bash
docker exec -it resolutionflow_postgres psql -U postgres -d resolutionflow \
  -c "\d session_suggested_fixes" | grep -E "status|applied_at|verified_at|partial_notes|failure_reason"
```

Expected: all five column names print.

- [ ] **Step 5: Commit**

```bash
git add backend/alembic/versions/ backend/app/models/session_suggested_fix.py
git commit -m "feat(pilot): add outcome tracking columns to session_suggested_fixes"
```

---

## Task 2: Pydantic schemas for outcome

**Files:**
- Modify: `backend/app/schemas/session_suggested_fix.py`

- [ ] **Step 1: Extend the response schema and add the request schema**

At the top of `backend/app/schemas/session_suggested_fix.py`, after the existing `UserDecision` literal, add:

```python
FixStatus = Literal[
    "proposed",
    "applied_success",
    "applied_failed",
    "applied_partial",
    "dismissed",
]
```

Extend `SessionSuggestedFixResponse` with the new fields (add after `user_decision`):

```python
    status: FixStatus
    applied_at: datetime | None
    verified_at: datetime | None
    partial_notes: str | None
    failure_reason: str | None
```

After `SessionSuggestedFixDecisionResponse`, add:

```python
class SessionSuggestedFixOutcomeRequest(BaseModel):
    """Engineer-reported outcome of applying a suggested fix.

    Writes to session_suggested_fixes.status and companion columns. This is
    orthogonal to `user_decision` (which records which script-path the
    engineer took); outcome captures whether the fix actually worked.

    Allowed transitions:
    - from `proposed` or `applied_partial`: any outcome is valid
      (partial is parked, not terminal — the engineer may update notes,
      abandon via dismiss, or advance to success/failed)
    - from any terminal outcome (`applied_success`, `applied_failed`,
      `dismissed`): server returns 409
    """
    outcome: Literal[
        "applied_success", "applied_failed", "applied_partial", "dismissed"
    ]
    # Required for applied_partial, optional for applied_failed, ignored otherwise.
    notes: str | None = Field(None, max_length=500)
```

- [ ] **Step 2: Commit**

```bash
git add backend/app/schemas/session_suggested_fix.py
git commit -m "feat(pilot): pydantic schemas for fix outcome patch"
```

---

## Task 3: PATCH /outcome endpoint + test

**Files:**
- Modify: `backend/app/api/endpoints/session_suggested_fixes.py`
- Create: `backend/tests/test_fix_outcome_endpoint.py`

- [ ] **Step 1: Write the failing test**

Create `backend/tests/test_fix_outcome_endpoint.py`:

```python
"""Integration tests for the fix outcome endpoint.

These tests rely on the `engineer_client` + `seed_ai_session_with_fix`
fixtures from `conftest.py` (existing pattern used by the decision-endpoint
tests).
"""
from __future__ import annotations

import pytest
from httpx import AsyncClient


@pytest.mark.asyncio
async def test_patch_outcome_marks_success(
    engineer_client: AsyncClient, seed_ai_session_with_fix
):
    session_id, fix_id = seed_ai_session_with_fix

    r = await engineer_client.patch(
        f"/api/v1/ai-sessions/{session_id}/suggested-fixes/{fix_id}/outcome",
        json={"outcome": "applied_success"},
    )
    assert r.status_code == 200, r.text
    body = r.json()
    assert body["status"] == "applied_success"
    assert body["verified_at"] is not None


@pytest.mark.asyncio
async def test_patch_outcome_partial_requires_notes(
    engineer_client: AsyncClient, seed_ai_session_with_fix
):
    session_id, fix_id = seed_ai_session_with_fix

    r = await engineer_client.patch(
        f"/api/v1/ai-sessions/{session_id}/suggested-fixes/{fix_id}/outcome",
        json={"outcome": "applied_partial"},
    )
    assert r.status_code == 400
    assert "notes" in r.text.lower()


@pytest.mark.asyncio
async def test_partial_to_success_allowed(
    engineer_client: AsyncClient, seed_ai_session_with_fix
):
    session_id, fix_id = seed_ai_session_with_fix

    r1 = await engineer_client.patch(
        f"/api/v1/ai-sessions/{session_id}/suggested-fixes/{fix_id}/outcome",
        json={"outcome": "applied_partial", "notes": "ran cred clear only"},
    )
    assert r1.status_code == 200

    r2 = await engineer_client.patch(
        f"/api/v1/ai-sessions/{session_id}/suggested-fixes/{fix_id}/outcome",
        json={"outcome": "applied_success"},
    )
    assert r2.status_code == 200
    assert r2.json()["status"] == "applied_success"


@pytest.mark.asyncio
async def test_terminal_outcome_is_locked(
    engineer_client: AsyncClient, seed_ai_session_with_fix
):
    session_id, fix_id = seed_ai_session_with_fix

    r1 = await engineer_client.patch(
        f"/api/v1/ai-sessions/{session_id}/suggested-fixes/{fix_id}/outcome",
        json={"outcome": "applied_failed", "notes": "no change"},
    )
    assert r1.status_code == 200

    r2 = await engineer_client.patch(
        f"/api/v1/ai-sessions/{session_id}/suggested-fixes/{fix_id}/outcome",
        json={"outcome": "applied_success"},
    )
    assert r2.status_code == 409
```

- [ ] **Step 2: Run the test — confirm it fails**

```bash
cd backend && pytest tests/test_fix_outcome_endpoint.py -v --override-ini="addopts="
```

Expected: four failures — endpoint doesn't exist yet (404 on PATCH).

- [ ] **Step 3: Add the endpoint**

Open `backend/app/api/endpoints/session_suggested_fixes.py`. Add near the other handlers (after the `decision` endpoint):

```python
@router.patch(
    "/ai-sessions/{session_id}/suggested-fixes/{fix_id}/outcome",
    response_model=SessionSuggestedFixResponse,
    tags=["flowpilot"],
)
async def patch_suggested_fix_outcome(
    session_id: UUID,
    fix_id: UUID,
    body: SessionSuggestedFixOutcomeRequest,
    current_user: User = Depends(require_engineer_or_admin),
    db: AsyncSession = Depends(get_db),
) -> SessionSuggestedFix:
    """Record the engineer's outcome for an applied fix.

    See SessionSuggestedFixOutcomeRequest for the transition rules.
    """
    now = datetime.now(timezone.utc)

    fix = await db.scalar(
        select(SessionSuggestedFix).where(
            SessionSuggestedFix.id == fix_id,
            SessionSuggestedFix.session_id == session_id,
        )
    )
    if fix is None:
        raise HTTPException(status_code=404, detail="Suggested fix not found")

    # Partial requires a note; without one we can't tell anyone (including
    # the AI on the next turn) what actually got done.
    if body.outcome == "applied_partial" and not (body.notes and body.notes.strip()):
        raise HTTPException(
            status_code=400,
            detail="notes are required when outcome is applied_partial",
        )

    TERMINAL = {"applied_success", "applied_failed", "dismissed"}
    if fix.status in TERMINAL:
        raise HTTPException(
            status_code=409,
            detail=f"Fix is already in terminal status {fix.status!r}",
        )

    fix.status = body.outcome
    if body.outcome == "applied_partial":
        fix.partial_notes = (body.notes or "").strip() or None
        # Partial is a parked state — no verified_at yet.
    elif body.outcome == "applied_failed":
        fix.failure_reason = (body.notes or "").strip() or None
        fix.verified_at = now
    elif body.outcome == "applied_success":
        fix.verified_at = now
    # applied_at is stamped by whoever calls this in the apply flow; if it's
    # still null at outcome-set time, set it to now (handles the case where
    # the AI emits [FIX_OUTCOME] before the engineer clicks Apply explicitly).
    if fix.applied_at is None and body.outcome != "dismissed":
        fix.applied_at = now

    await db.commit()
    await db.refresh(fix)
    return fix
```

Add missing imports at the top of the file if not already present:

```python
from datetime import datetime, timezone
from app.schemas.session_suggested_fix import SessionSuggestedFixOutcomeRequest
```

- [ ] **Step 4: Run the tests — confirm they pass**

```bash
cd backend && pytest tests/test_fix_outcome_endpoint.py -v --override-ini="addopts="
```

Expected: 4 passed.

- [ ] **Step 5: Commit**

```bash
git add backend/app/api/endpoints/session_suggested_fixes.py backend/tests/test_fix_outcome_endpoint.py
git commit -m "feat(pilot): PATCH /suggested-fixes/:id/outcome endpoint + tests"
```

---

## Task 4: `[FIX_OUTCOME]` marker parser + test

**Files:**
- Modify: `backend/app/services/unified_chat_service.py`
- Create: `backend/tests/test_fix_outcome_marker.py`

- [ ] **Step 1: Write the failing test**

Create `backend/tests/test_fix_outcome_marker.py`:

```python
"""Unit tests for the [FIX_OUTCOME] marker parser."""
from __future__ import annotations

from app.services.unified_chat_service import _parse_fix_outcome_marker


def test_parses_success_outcome():
    ai = (
        "Great news — that confirms the root cause.\n\n"
        "[FIX_OUTCOME]\n"
        '{"fix_id":"11111111-1111-1111-1111-111111111111",'
        '"outcome":"success","reason":"user said the fix worked"}\n'
        "[/FIX_OUTCOME]\n"
    )
    cleaned, parsed = _parse_fix_outcome_marker(ai)
    assert "[FIX_OUTCOME]" not in cleaned
    assert "confirms the root cause" in cleaned
    assert parsed == {
        "fix_id": "11111111-1111-1111-1111-111111111111",
        "outcome": "success",
        "reason": "user said the fix worked",
    }


def test_parses_failure_outcome():
    ai = (
        "[FIX_OUTCOME]\n"
        '{"fix_id":"22222222-2222-2222-2222-222222222222",'
        '"outcome":"failure","reason":"user reports still broken"}\n'
        "[/FIX_OUTCOME]"
    )
    _, parsed = _parse_fix_outcome_marker(ai)
    assert parsed["outcome"] == "failure"


def test_missing_marker_returns_none():
    ai = "no marker here"
    cleaned, parsed = _parse_fix_outcome_marker(ai)
    assert cleaned == ai
    assert parsed is None


def test_invalid_json_is_dropped():
    ai = "[FIX_OUTCOME]\nnot-json\n[/FIX_OUTCOME]"
    cleaned, parsed = _parse_fix_outcome_marker(ai)
    assert "[FIX_OUTCOME]" not in cleaned
    assert parsed is None


def test_unknown_outcome_rejected():
    ai = (
        "[FIX_OUTCOME]\n"
        '{"fix_id":"33333333-3333-3333-3333-333333333333",'
        '"outcome":"maybe","reason":"x"}\n'
        "[/FIX_OUTCOME]"
    )
    _, parsed = _parse_fix_outcome_marker(ai)
    assert parsed is None
```

- [ ] **Step 2: Run the test — confirm it fails**

```bash
cd backend && pytest tests/test_fix_outcome_marker.py -v --override-ini="addopts="
```

Expected: `ImportError: cannot import name '_parse_fix_outcome_marker'` — parser doesn't exist yet.

- [ ] **Step 3: Implement the parser**

Open `backend/app/services/unified_chat_service.py`. Right after `_parse_suggest_fix_marker`, add:

```python
def _parse_fix_outcome_marker(
    ai_content: str,
) -> tuple[str, dict[str, Any] | None]:
    """Extract a single [FIX_OUTCOME]...[/FIX_OUTCOME] JSON block.

    Block shape:
      {"fix_id": "<uuid>", "outcome": "success"|"failure"|"partial",
       "reason": "<one-line>"}

    Emitted by the AI when the engineer clearly indicates in chat that a
    prior suggested fix worked, didn't work, or was partially applied.
    The marker PROPOSES an outcome — the engineer confirms via the UI.
    Only the last block in a response is honored.
    """
    blocks = list(re.finditer(
        r"\[FIX_OUTCOME\]\s*([\s\S]*?)\s*\[/FIX_OUTCOME\]", ai_content,
    ))
    if not blocks:
        return ai_content, None

    last = blocks[-1]
    raw = last.group(1).strip()
    if raw.startswith("```"):
        raw = re.sub(r"^```(?:json)?\s*", "", raw)
        raw = re.sub(r"\s*```$", "", raw)

    cleaned = re.sub(
        r"\[FIX_OUTCOME\]\s*[\s\S]*?\s*\[/FIX_OUTCOME\]", "", ai_content,
    ).strip()

    try:
        data = json.loads(raw)
    except (json.JSONDecodeError, ValueError) as e:
        logger.warning("Failed to parse [FIX_OUTCOME] block: %s", e)
        return cleaned, None

    if not isinstance(data, dict):
        return cleaned, None

    fix_id = str(data.get("fix_id") or "").strip()
    outcome = str(data.get("outcome") or "").strip().lower()
    reason = str(data.get("reason") or "").strip()

    if not fix_id or outcome not in {"success", "failure", "partial"}:
        logger.warning("[FIX_OUTCOME] missing/invalid fields, dropping")
        return cleaned, None

    return cleaned, {"fix_id": fix_id, "outcome": outcome, "reason": reason}
```

- [ ] **Step 4: Wire the parser into the AI-response handler**

In the same file, find the block where `_parse_suggest_fix_marker` is called during AI-response processing. Add a companion call right after it. The exact location is the function that processes the raw AI response before persisting messages — search for `_parse_suggest_fix_marker(` to find it. Inside that function, after the suggest-fix call:

```python
    ai_content, outcome_proposal = _parse_fix_outcome_marker(ai_content)
```

Then, after the suggest-fix persistence block, add:

```python
    if outcome_proposal is not None:
        # The AI is proposing an outcome; we persist it as an
        # ai_outcome_proposal event on the session so the frontend can
        # surface the "AI detected outcome — confirm?" banner. The
        # session's active fix is not mutated until the engineer confirms.
        await _record_ai_outcome_proposal(
            db=db, session=session, proposal=outcome_proposal,
        )
```

And add the helper near `_persist_suggested_fix`:

```python
async def _record_ai_outcome_proposal(
    *,
    db: AsyncSession,
    session: AISession,
    proposal: dict[str, Any],
) -> None:
    """Persist the AI's proposed outcome as a pending event on the active fix.

    We store this on a new JSONB column on the fix (ai_outcome_proposal)
    rather than as a separate event table — one active proposal at a time,
    overwritten on each new [FIX_OUTCOME]. Frontend polls the active fix
    and renders the AI-confirming banner state when this is non-null.
    """
    from uuid import UUID as _UUID
    try:
        fix_id = _UUID(proposal["fix_id"])
    except (ValueError, KeyError):
        logger.warning("[FIX_OUTCOME] invalid fix_id, dropping")
        return

    await db.execute(
        update(SessionSuggestedFix)
        .where(
            SessionSuggestedFix.id == fix_id,
            SessionSuggestedFix.session_id == session.id,
        )
        .values(ai_outcome_proposal=proposal)
    )
```

- [ ] **Step 5: Run the marker tests — confirm they pass**

```bash
cd backend && pytest tests/test_fix_outcome_marker.py tests/test_fix_outcome_endpoint.py -v --override-ini="addopts="
```

Expected: 9 passed (5 marker + 4 endpoint).

- [ ] **Step 6: Commit**

```bash
git add backend/
git commit -m "feat(pilot): [FIX_OUTCOME] marker parser + ai_outcome_proposal column"
```

---

## Task 5: System prompt update + anti-parrot guardrail

**Files:**
- Modify: `backend/app/services/assistant_chat_service.py` — `ASSISTANT_SYSTEM_PROMPT` is the prompt used by `unified_chat_service._call_ai`; `flowpilot_engine.py` has a separate prompt for structured JSON flows that does not use chat markers
- Modify: `backend/tests/test_prompt_anti_parrot.py`

- [ ] **Step 1: Locate the system prompt**

```bash
grep -rln "ASSISTANT_SYSTEM_PROMPT\s*=" /config/workspace/resolutionflow/backend/app/
```

Open whichever file owns the constant.

- [ ] **Step 2: Append the `[FIX_OUTCOME]` instructions to the prompt**

Inside the prompt string, in the markers section, add a new block alongside the existing `[SUGGEST_FIX]` instructions. **Use placeholder syntax exclusively — never literal values** (anti-parrot lesson):

```
## Reporting fix outcome with [FIX_OUTCOME]

When the engineer clearly indicates in chat that a previously proposed fix
worked, didn't work, or was partially applied, emit a [FIX_OUTCOME] marker
on its own lines. This surfaces a "confirm outcome?" banner in the UI — it
does NOT mark the fix resolved on its own.

Emit [FIX_OUTCOME] when:
- the engineer states the user's problem is resolved after applying the fix
  (e.g. affirmative resolution language → outcome="success")
- the engineer states the issue persists after applying the fix
  (→ outcome="failure")
- the engineer describes applying only part of the fix
  (→ outcome="partial")

Do NOT emit [FIX_OUTCOME] when:
- the engineer is still verifying (user rebooting, testing, etc.)
- the outcome is ambiguous or inferred rather than stated
- no [SUGGEST_FIX] has been emitted this session

Format (one block, on its own lines, placeholders only):

[FIX_OUTCOME]
{"fix_id": "<uuid-of-the-active-suggested-fix>",
 "outcome": "<success|failure|partial>",
 "reason": "<one-line-quote-or-paraphrase-of-what-the-engineer-said>"}
[/FIX_OUTCOME]
```

- [ ] **Step 3: Update the anti-parrot test**

Open `backend/tests/test_prompt_anti_parrot.py`. The existing test scans for literal tokens. If `[FIX_OUTCOME]` introduces any new tokens worth guarding (none expected — all placeholders are `<…>` style), add them to the leaked-token list. If nothing new, move on — the existing scanner will catch any literal JSON value that sneaks in.

- [ ] **Step 4: Run the anti-parrot test**

```bash
cd backend && pytest tests/test_prompt_anti_parrot.py -v --override-ini="addopts="
```

Expected: pass. If it fails with a literal-value complaint, re-read the prompt and swap any concrete fix_id / outcome / reason you accidentally wrote into `<placeholder>` form.

- [ ] **Step 5: Commit**

```bash
git add backend/app/services/assistant_chat_service.py backend/tests/test_prompt_anti_parrot.py
git commit -m "feat(pilot): [FIX_OUTCOME] system prompt instructions"
```

---

## Task 6: Frontend types + API client

**Files:**
- Modify: `frontend/src/api/sessionSuggestedFixes.ts`

- [ ] **Step 1: Extend the types and add the patch method**

At the top of `frontend/src/api/sessionSuggestedFixes.ts`, after `UserDecision`, add:

```ts
export type FixStatus =
  | 'proposed'
  | 'applied_success'
  | 'applied_failed'
  | 'applied_partial'
  | 'dismissed'

export type FixOutcome =
  | 'applied_success'
  | 'applied_failed'
  | 'applied_partial'
  | 'dismissed'

export interface AIOutcomeProposal {
  fix_id: string
  outcome: 'success' | 'failure' | 'partial'
  reason: string
}
```

Extend `SessionSuggestedFix` to include the new fields (add after `user_decision`):

```ts
  status: FixStatus
  applied_at: string | null
  verified_at: string | null
  partial_notes: string | null
  failure_reason: string | null
  ai_outcome_proposal: AIOutcomeProposal | null
```

Add a new method on `sessionSuggestedFixesApi` (after `recordDecision`):

```ts
  /**
   * Record the outcome of applying a suggested fix. Transitions:
   * - from 'proposed' or 'applied_partial': any outcome is valid
   *   (partial→partial updates notes, partial→dismissed abandons)
   * - terminal statuses (applied_success, applied_failed, dismissed) are locked (server returns 409)
   */
  async patchOutcome(
    sessionId: string,
    fixId: string,
    outcome: FixOutcome,
    notes?: string,
  ): Promise<SessionSuggestedFix> {
    const r = await apiClient.patch<SessionSuggestedFix>(
      `/ai-sessions/${sessionId}/suggested-fixes/${fixId}/outcome`,
      { outcome, notes },
    )
    return r.data
  },
```

- [ ] **Step 2: Verify types compile**

```bash
cd frontend && npx tsc -b
```

Expected: clean build, no errors.

- [ ] **Step 3: Commit**

```bash
git add frontend/src/api/sessionSuggestedFixes.ts
git commit -m "feat(pilot): frontend fix-outcome types + patch API"
```

---

## Task 7: ProposalBanner component — core + Proposed state

**Files:**
- Create: `frontend/src/components/pilot/ProposalBanner.tsx`

- [ ] **Step 1: Create the component scaffold**

Create `frontend/src/components/pilot/ProposalBanner.tsx`:

```tsx
/**
 * ProposalBanner — chat-composer-anchored banner that carries the lifecycle
 * of a suggested fix from Proposed → Verifying → terminal outcome.
 *
 * Replaces the task-lane SuggestedFix card (Phase 8). The banner renders
 * above the chat composer in AssistantChatPage. Parent owns the fix record
 * and the outcome mutations; this component renders + dispatches callbacks.
 *
 * Visual reference: docs/FlowAssist_Migration/mockups/06-slide-up-banner.html
 * + 07-verify-states.html.
 */
import { useState } from 'react'
import { Sparkles, X, Check, Info, ChevronDown, MoreHorizontal } from 'lucide-react'
import { cn } from '@/lib/utils'
import type {
  SessionSuggestedFix,
  FixOutcome,
} from '@/api/sessionSuggestedFixes'

export type BannerMode =
  | 'proposed'       // AI just proposed; engineer hasn't applied yet
  | 'verifying'      // Engineer clicked Apply; awaiting outcome
  | 'partial'        // Applied partially; awaiting finish or terminal outcome
  | 'ai_confirming'  // AI emitted [FIX_OUTCOME]; engineer confirms
  | 'nudge'          // Compact nudge shown after N post-apply messages

export interface ProposalBannerProps {
  fix: SessionSuggestedFix
  mode: BannerMode
  onApply: () => void
  onDismiss: () => void
  onOutcome: (outcome: FixOutcome, notes?: string) => void
  onAcceptAIProposal: () => void
  onRejectAIProposal: () => void
  /** Collapsed variant shown as a thin single-line strip. */
  collapsed?: boolean
  onToggleCollapsed?: () => void
}

export function ProposalBanner(props: ProposalBannerProps) {
  if (props.collapsed) return <CollapsedBanner {...props} />
  switch (props.mode) {
    case 'proposed':      return <ProposedBanner {...props} />
    case 'verifying':     return <VerifyingBanner {...props} />
    case 'partial':       return <PartialBanner {...props} />
    case 'ai_confirming': return <AIConfirmingBanner {...props} />
    case 'nudge':         return <NudgeBanner {...props} />
  }
}

function ProposedBanner({ fix, onApply, onDismiss }: ProposalBannerProps) {
  return (
    <div className="relative border-t border-warning/30 bg-gradient-to-b from-warning-dim/40 to-warning-dim/20 px-5 py-3 animate-slide-up">
      <div className="absolute left-0 top-0 bottom-0 w-[3px] bg-warning" />
      <div className="flex items-start gap-3">
        <div className="shrink-0 mt-0.5 w-7 h-7 rounded-md border border-warning/30 bg-warning-dim flex items-center justify-center text-warning">
          <Sparkles size={15} />
        </div>
        <div className="flex-1 min-w-0">
          <div className="flex items-center gap-2 font-heading text-[10px] font-semibold uppercase tracking-[1.2px] text-warning">
            <span>Suggested Fix</span>
            <span className="tabular-nums px-2 py-[2px] rounded-full bg-warning/20 text-warning text-[10.5px] font-bold">
              {fix.confidence_pct}% confidence
            </span>
          </div>
          <div className="mt-0.5 text-[14px] font-semibold text-heading leading-snug">
            {fix.title}
          </div>
          <div className="mt-1 text-[12.5px] text-muted-foreground leading-relaxed">
            {fix.description}
          </div>
          {fix.script_template_id && (
            <div className="mt-1.5 inline-flex items-center gap-1.5 text-[11.5px] text-success">
              <Check size={11} />
              Matches an existing Script Library template — one-click apply
            </div>
          )}
        </div>
        <div className="flex items-center gap-2 shrink-0 pt-0.5">
          <button
            onClick={() => { /* hook: collapse */ }}
            className="p-1.5 rounded text-muted-foreground hover:bg-white/[0.08] hover:text-primary"
            aria-label="Collapse"
          >
            <ChevronDown size={14} />
          </button>
          <button
            onClick={onDismiss}
            className="px-2.5 py-1.5 rounded text-[12.5px] text-muted-foreground hover:bg-white/[0.08] hover:text-primary"
          >
            Dismiss
          </button>
          <button
            onClick={onApply}
            className="px-3.5 py-[9px] rounded-lg bg-warning text-[#1a1200] font-semibold text-[12.5px] hover:bg-[#ffce4f] inline-flex items-center gap-1.5"
          >
            Apply fix
            <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.5" strokeLinecap="round" strokeLinejoin="round"><polyline points="9 18 15 12 9 6" /></svg>
          </button>
        </div>
      </div>
    </div>
  )
}

// Placeholder renderers — filled in Task 8 / 9.
function VerifyingBanner(_: ProposalBannerProps) { return null }
function PartialBanner(_: ProposalBannerProps) { return null }
function AIConfirmingBanner(_: ProposalBannerProps) { return null }
function NudgeBanner(_: ProposalBannerProps) { return null }
function CollapsedBanner(_: ProposalBannerProps) { return null }

export default ProposalBanner
```

- [ ] **Step 2: Add the slide-up animation**

Open `frontend/src/index.css`. Add near the existing animations:

```css
@keyframes slide-up {
  from { transform: translateY(14px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}
.animate-slide-up { animation: slide-up 320ms cubic-bezier(.22,.9,.28,1) both; }
```

- [ ] **Step 3: Compile + visual smoke test**

```bash
cd frontend && npx tsc -b
```

Expected: clean.

To visually check, mount it ad-hoc by editing `AssistantChatPage.tsx` temporarily to render `<ProposalBanner fix={...mock} mode="proposed" onApply={() => {}} onDismiss={() => {}} onOutcome={() => {}} onAcceptAIProposal={() => {}} onRejectAIProposal={() => {}} />` above the composer. Revert the edit before commit.

- [ ] **Step 4: Commit**

```bash
git add frontend/src/components/pilot/ProposalBanner.tsx frontend/src/index.css
git commit -m "feat(pilot): ProposalBanner scaffold + Proposed state"
```

---

## Task 8: ProposalBanner — Verifying + Partial states

**Files:**
- Modify: `frontend/src/components/pilot/ProposalBanner.tsx`

- [ ] **Step 1: Implement VerifyingBanner**

Replace the `function VerifyingBanner` placeholder with:

```tsx
function VerifyingBanner({ fix, onOutcome }: ProposalBannerProps) {
  const [showOverflow, setShowOverflow] = useState(false)
  const appliedLabel = fix.applied_at
    ? `Applied ${formatRelativeMinutes(fix.applied_at)}`
    : 'Applied'

  return (
    <div className="relative border-t border-warning/30 bg-gradient-to-b from-warning-dim/40 to-warning-dim/20 px-5 py-3 animate-slide-up">
      <div className="absolute left-0 top-0 bottom-0 w-[3px] bg-warning" />
      <div className="flex items-start gap-3">
        <div className="relative shrink-0 mt-0.5 w-7 h-7 rounded-md border border-warning/30 bg-warning-dim flex items-center justify-center text-warning">
          <svg width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
            <circle cx="12" cy="12" r="10" /><polyline points="12 6 12 12 16 14" />
          </svg>
          <span className="absolute inset-[-3px] rounded-lg animate-pulse-amber" />
        </div>
        <div className="flex-1 min-w-0">
          <div className="flex items-center gap-2 font-heading text-[10px] font-semibold uppercase tracking-[1.2px] text-warning">
            <span>Verifying</span>
            <span className="px-2 py-[2px] rounded-full bg-warning/20 text-warning text-[10.5px] font-bold normal-case tracking-normal">
              {appliedLabel}
            </span>
          </div>
          <div className="mt-0.5 text-[14px] font-semibold text-heading leading-snug">
            Did "{fix.title}" work?
          </div>
          <div className="mt-1 text-[12.5px] text-muted-foreground leading-relaxed">
            Mark the outcome so the AI can either close the session with this as the resolution, or propose something else.
          </div>
        </div>
        <div className="flex items-center gap-2 shrink-0 pt-0.5 relative">
          <button
            onClick={() => setShowOverflow(v => !v)}
            className="p-1.5 rounded text-muted-foreground hover:bg-white/[0.08] hover:text-primary"
            aria-label="More options"
          >
            <MoreHorizontal size={14} />
          </button>
          {showOverflow && (
            <div className="absolute top-full right-0 mt-1 w-48 rounded-lg border border-white/10 bg-card shadow-xl py-1 z-10">
              <button
                onClick={() => {
                  setShowOverflow(false)
                  const notes = window.prompt('What did you run / skip?')
                  if (notes && notes.trim()) onOutcome('applied_partial', notes.trim())
                }}
                className="w-full text-left px-3 py-2 text-[12.5px] hover:bg-elevated text-primary"
              >
                Mark partial…
              </button>
            </div>
          )}
          <button
            onClick={() => {
              const reason = window.prompt('Why didn\'t it work? (optional)')
              onOutcome('applied_failed', reason?.trim() || undefined)
            }}
            className="px-3 py-[9px] rounded-lg border border-danger/30 text-danger text-[12.5px] font-medium hover:bg-danger-dim hover:border-danger inline-flex items-center gap-1.5"
          >
            <X size={12} strokeWidth={2.5} />
            Didn't work
          </button>
          <button
            onClick={() => onOutcome('applied_success')}
            className="px-3 py-[9px] rounded-lg bg-success text-[#0a1a12] font-semibold text-[12.5px] hover:brightness-110 inline-flex items-center gap-1.5"
          >
            <Check size={12} strokeWidth={2.5} />
            It worked
          </button>
        </div>
      </div>
    </div>
  )
}

function formatRelativeMinutes(iso: string): string {
  const then = new Date(iso).getTime()
  const mins = Math.max(0, Math.round((Date.now() - then) / 60000))
  if (mins === 0) return 'just now'
  if (mins === 1) return '1m ago'
  return `${mins}m ago`
}
```

Add the pulse animation to `frontend/src/index.css`:

```css
@keyframes pulse-amber {
  0%   { box-shadow: 0 0 0 0    rgba(251,191,36,0.45); }
  70%  { box-shadow: 0 0 0 10px rgba(251,191,36,0); }
  100% { box-shadow: 0 0 0 0    rgba(251,191,36,0); }
}
.animate-pulse-amber { animation: pulse-amber 1.6s infinite; }
```

- [ ] **Step 2: Implement PartialBanner**

Replace the `function PartialBanner` placeholder with:

```tsx
function PartialBanner({ fix, onOutcome, onApply }: ProposalBannerProps) {
  return (
    <div className="relative border-t border-info/30 bg-gradient-to-b from-info-dim/40 to-info-dim/20 px-5 py-3 animate-slide-up">
      <div className="absolute left-0 top-0 bottom-0 w-[3px] bg-info" />
      <div className="flex items-start gap-3">
        <div className="shrink-0 mt-0.5 w-7 h-7 rounded-md border border-info/30 bg-info-dim flex items-center justify-center text-info">
          <Info size={15} />
        </div>
        <div className="flex-1 min-w-0">
          <div className="flex items-center gap-2 font-heading text-[10px] font-semibold uppercase tracking-[1.2px] text-info">
            <span>Partially applied</span>
            <span className="px-2 py-[2px] rounded-full bg-info/20 text-info text-[10.5px] font-bold normal-case tracking-normal">
              Parked
            </span>
          </div>
          <div className="mt-0.5 text-[14px] font-semibold text-heading leading-snug">
            {fix.title}
          </div>
          {fix.partial_notes && (
            <div className="mt-1.5 flex items-center gap-2 px-2.5 py-1.5 rounded-md bg-info/[0.08] border border-info/30 text-[12px] italic text-primary">
              <span className="not-italic font-bold text-info text-[10.5px] uppercase tracking-[0.6px]">Note</span>
              <span>{fix.partial_notes}</span>
            </div>
          )}
        </div>
        <div className="flex items-center gap-2 shrink-0 pt-0.5">
          <button
            onClick={() => {
              const reason = window.prompt('Why didn\'t it work? (optional)')
              onOutcome('applied_failed', reason?.trim() || undefined)
            }}
            className="px-3 py-[9px] rounded-lg border border-danger/30 text-danger text-[12.5px] font-medium hover:bg-danger-dim hover:border-danger"
          >
            Didn't work
          </button>
          <button
            onClick={onApply}
            className="px-3 py-[9px] rounded-lg bg-card border border-white/10 text-primary text-[12.5px] font-medium hover:bg-elevated"
          >
            Finish it ›
          </button>
          <button
            onClick={() => onOutcome('applied_success')}
            className="px-3 py-[9px] rounded-lg bg-success text-[#0a1a12] font-semibold text-[12.5px] hover:brightness-110"
          >
            It worked
          </button>
        </div>
      </div>
    </div>
  )
}
```

- [ ] **Step 3: Verify types compile**

```bash
cd frontend && npx tsc -b
```

Expected: clean.

- [ ] **Step 4: Commit**

```bash
git add frontend/src/components/pilot/ProposalBanner.tsx frontend/src/index.css
git commit -m "feat(pilot): banner Verifying + Partial states"
```

---

## Task 9: ProposalBanner — AIConfirming + Nudge + Collapsed states

**Files:**
- Modify: `frontend/src/components/pilot/ProposalBanner.tsx`

- [ ] **Step 1: Implement AIConfirmingBanner**

Replace the placeholder:

```tsx
function AIConfirmingBanner({ fix, onAcceptAIProposal, onRejectAIProposal }: ProposalBannerProps) {
  const proposal = fix.ai_outcome_proposal
  if (!proposal) return null
  const isSuccess = proposal.outcome === 'success'

  return (
    <div className="relative border-t border-accent/30 bg-gradient-to-b from-accent-dim/40 to-accent-dim/20 px-5 py-3 animate-slide-up">
      <div className="absolute left-0 top-0 bottom-0 w-[3px] bg-accent" />
      <div className="flex items-start gap-3">
        <div className="shrink-0 mt-0.5 w-7 h-7 rounded-md border border-accent/30 bg-accent-dim flex items-center justify-center text-accent">
          <Sparkles size={15} />
        </div>
        <div className="flex-1 min-w-0">
          <div className="flex items-center gap-2 font-heading text-[10px] font-semibold uppercase tracking-[1.2px] text-accent">
            <span>AI detected outcome</span>
            <span className="px-2 py-[2px] rounded-full bg-accent/20 text-accent text-[10.5px] font-bold normal-case tracking-normal">
              {isSuccess ? 'Success' : proposal.outcome === 'failure' ? 'Failure' : 'Partial'}
            </span>
          </div>
          <div className="mt-0.5 text-[14px] font-semibold text-heading leading-snug">
            AI thinks the fix {isSuccess ? 'resolved the issue' : proposal.outcome === 'failure' ? 'didn\'t work' : 'was partially applied'} — confirm?
          </div>
          <div className="mt-1 text-[12.5px] text-muted-foreground leading-relaxed">
            {proposal.reason || 'Based on the recent chat. One click either confirms or corrects.'}
          </div>
        </div>
        <div className="flex items-center gap-2 shrink-0 pt-0.5">
          <button
            onClick={onRejectAIProposal}
            className="px-3 py-[9px] rounded-lg text-muted-foreground text-[12.5px] hover:bg-white/[0.08] hover:text-primary"
          >
            Not yet
          </button>
          <button
            onClick={onAcceptAIProposal}
            className={cn(
              'px-3 py-[9px] rounded-lg font-semibold text-[12.5px] inline-flex items-center gap-1.5 hover:brightness-110',
              isSuccess ? 'bg-success text-[#0a1a12]' : 'bg-danger text-[#180808]',
            )}
          >
            <Check size={12} strokeWidth={2.5} />
            Confirm{isSuccess ? ' · Resolve' : ''}
          </button>
        </div>
      </div>
    </div>
  )
}
```

- [ ] **Step 2: Implement NudgeBanner**

```tsx
function NudgeBanner({ fix, onOutcome }: ProposalBannerProps) {
  return (
    <div className="relative border-t border-warning/30 bg-warning-dim/60 px-5 py-2 flex items-center gap-3">
      <div className="absolute left-0 top-0 bottom-0 w-[3px] bg-warning" />
      <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="text-warning shrink-0">
        <circle cx="12" cy="12" r="10" /><path d="M12 8v4" /><path d="M12 16h.01" />
      </svg>
      <span className="flex-1 text-[12.5px] text-primary">
        Did <strong className="text-heading">"{fix.title}"</strong> work?
      </span>
      <button
        onClick={() => { /* silence for 3 more messages — handled by parent */ }}
        className="px-2.5 py-1 rounded text-[12px] text-muted-foreground hover:bg-white/[0.08] hover:text-primary"
      >
        Still checking
      </button>
      <button
        onClick={() => {
          const reason = window.prompt('Why didn\'t it work? (optional)')
          onOutcome('applied_failed', reason?.trim() || undefined)
        }}
        className="px-2.5 py-1 rounded border border-danger/30 text-danger text-[12px] hover:bg-danger-dim"
      >
        No
      </button>
      <button
        onClick={() => onOutcome('applied_success')}
        className="px-2.5 py-1 rounded bg-success text-[#0a1a12] font-semibold text-[12px] hover:brightness-110"
      >
        Yes
      </button>
    </div>
  )
}
```

- [ ] **Step 3: Implement CollapsedBanner**

```tsx
function CollapsedBanner({ fix, onToggleCollapsed }: ProposalBannerProps) {
  return (
    <button
      onClick={onToggleCollapsed}
      className="relative w-full border-t border-warning/30 bg-warning-dim/40 px-5 py-2 flex items-center gap-2.5 hover:bg-warning-dim/60 transition-colors text-left"
    >
      <div className="absolute left-0 top-0 bottom-0 w-[3px] bg-warning" />
      <Sparkles size={12} className="text-warning shrink-0" />
      <span className="flex-1 text-[12px] font-medium text-heading truncate">{fix.title}</span>
      <span className="px-1.5 py-[1px] rounded-full bg-warning/20 text-warning text-[10.5px] font-bold tabular-nums">
        {fix.confidence_pct}%
      </span>
      <span className="text-muted-foreground text-[11px]">▸ expand</span>
    </button>
  )
}
```

- [ ] **Step 4: Verify Tailwind classes resolve + compile**

```bash
cd frontend && npx tsc -b && npm run build
```

Expected: clean — `npm run build` is stricter than `tsc --noEmit` per Lesson.

- [ ] **Step 5: Commit**

```bash
git add frontend/src/components/pilot/ProposalBanner.tsx
git commit -m "feat(pilot): banner AI-confirming, Nudge, Collapsed states"
```

---

## Task 10: EscalateInterceptDialog

**Files:**
- Create: `frontend/src/components/pilot/EscalateInterceptDialog.tsx`

- [ ] **Step 1: Create the component**

```tsx
/**
 * Popover dialog that intercepts Escalate when a fix is in verifying/partial
 * status. Captures outcome before the escalation so the narrative is honest
 * for whoever picks up the ticket.
 */
import { X, AlertCircle, Check } from 'lucide-react'
import type { FixOutcome } from '@/api/sessionSuggestedFixes'

export interface EscalateInterceptDialogProps {
  fixTitle: string
  onChoose: (
    outcome: FixOutcome | 'never_applied',
  ) => void
  onClose: () => void
}

export function EscalateInterceptDialog({
  fixTitle, onChoose, onClose,
}: EscalateInterceptDialogProps) {
  return (
    <>
      <div className="fixed inset-0 z-40" onClick={onClose} />
      <div className="absolute bottom-full mb-2 left-0 z-50 w-[340px] rounded-lg border border-white/15 bg-card p-3.5 shadow-[0_18px_40px_rgba(0,0,0,0.55)]">
        <div className="font-heading font-semibold text-[13px] text-heading mb-1">
          Before escalating — what happened with the fix?
        </div>
        <div className="text-[12px] text-muted-foreground leading-[1.5] mb-3">
          "{fixTitle}" is still in the Verifying state. Tag its outcome so the senior picking this up knows what's been tried.
        </div>
        <div className="flex flex-col gap-1.5">
          <button
            onClick={() => onChoose('applied_failed')}
            autoFocus
            className="flex items-center gap-2.5 px-3 py-2.5 rounded-lg border border-danger/30 bg-danger-dim text-[12.5px] text-primary hover:bg-danger-dim/80 hover:border-danger transition-colors text-left"
          >
            <X size={13} strokeWidth={2.5} className="text-danger" />
            <span className="flex-1">The fix didn't work</span>
            <span className="text-[10.5px] text-muted-foreground font-mono px-1.5 py-[2px] rounded bg-white/[0.05]">↵</span>
          </button>
          <button
            onClick={() => onChoose('applied_success')}
            className="flex items-center gap-2.5 px-3 py-2.5 rounded-lg border border-white/10 bg-elevated text-[12.5px] text-primary hover:bg-sidebar transition-colors text-left"
          >
            <Check size={13} strokeWidth={2} />
            <span className="flex-1">It worked — escalating for another reason</span>
          </button>
          <button
            onClick={() => onChoose('never_applied')}
            className="flex items-center gap-2.5 px-3 py-2.5 rounded-lg border border-white/10 bg-elevated text-[12.5px] text-primary hover:bg-sidebar transition-colors text-left"
          >
            <AlertCircle size={13} strokeWidth={2} />
            <span className="flex-1">Never actually applied it</span>
          </button>
        </div>
      </div>
    </>
  )
}

export default EscalateInterceptDialog
```

- [ ] **Step 2: Verify it compiles**

```bash
cd frontend && npx tsc -b
```

Expected: clean.

- [ ] **Step 3: Commit**

```bash
git add frontend/src/components/pilot/EscalateInterceptDialog.tsx
git commit -m "feat(pilot): EscalateInterceptDialog popover"
```

---

## Task 11: Integrate banner into AssistantChatPage

**Files:**
- Modify: `frontend/src/pages/AssistantChatPage.tsx`
- Modify: `frontend/src/components/pilot/TaskLane.tsx` (pass null for suggestedFixSlot)

- [ ] **Step 1: Find and remove the existing SuggestedFix card render**

In `AssistantChatPage.tsx`, search for `<SuggestedFix` and the corresponding `suggestedFixSlot={...}` prop passed to `<TaskLane`. The card lives inside the task lane today; remove its usage — pass `suggestedFixSlot={null}` (keep the prop in TaskLane's API for now so other callers don't break) or delete the prop usage entirely if TaskLane is the only caller. Grep to verify:

```bash
grep -rn "suggestedFixSlot" /config/workspace/resolutionflow/frontend/src/
```

- [ ] **Step 2: Add banner state + handlers**

Near the top of the component body (after existing useState calls for the active fix — search for `activeFix`):

```tsx
const [bannerCollapsed, setBannerCollapsed] = useState(false)
const [postApplyMsgCount, setPostApplyMsgCount] = useState(0)
const [nudgeSilenced, setNudgeSilenced] = useState(false)
const [escalateIntercept, setEscalateIntercept] = useState<{ fixId: string; fixTitle: string } | null>(null)

const bannerMode: BannerMode | null = (() => {
  if (!activeFix) return null
  if (activeFix.status === 'dismissed') return null
  if (activeFix.ai_outcome_proposal) return 'ai_confirming'
  if (activeFix.status === 'applied_partial') return 'partial'
  if (activeFix.status === 'applied_success' || activeFix.status === 'applied_failed') return null
  if (activeFix.applied_at) {
    if (postApplyMsgCount >= 3 && !nudgeSilenced) return 'nudge'
    return 'verifying'
  }
  return 'proposed'
})()

const handleApplyFix = useCallback(async () => {
  // Existing apply logic — opens Script Generator / NoTemplateDialog.
  // After the script successfully runs (or the engineer acknowledges the
  // open-script-in-builder handoff), patch status: proposed → verifying via
  // the existing "decision" endpoint (which already stamps one_off/draft/build),
  // AND patch outcome via the new API to set applied_at.
  await sessionSuggestedFixesApi.patchOutcome(
    sessionId, activeFix!.id, activeFix!.status as FixOutcome, /* no notes */
  ).catch(() => { /* tolerate — applied_at is stamped server-side on next outcome call */ })
  setPostApplyMsgCount(0)
  setNudgeSilenced(false)
  /* existing apply flow continues here */
}, [sessionId, activeFix])

const handleSetOutcome = useCallback(async (outcome: FixOutcome, notes?: string) => {
  if (!activeFix) return
  const updated = await sessionSuggestedFixesApi.patchOutcome(
    sessionId, activeFix.id, outcome, notes,
  )
  setActiveFix(updated)
  if (outcome === 'applied_success') {
    // Auto-open ResolutionNotePreview pre-filled with the fix as resolution.
    openResolutionNotePreview()
  }
}, [sessionId, activeFix, openResolutionNotePreview])

const handleAcceptAIProposal = useCallback(async () => {
  if (!activeFix?.ai_outcome_proposal) return
  const map: Record<string, FixOutcome> = {
    success: 'applied_success', failure: 'applied_failed', partial: 'applied_partial',
  }
  const outcome = map[activeFix.ai_outcome_proposal.outcome]
  const notes = activeFix.ai_outcome_proposal.reason
  await handleSetOutcome(
    outcome,
    outcome === 'applied_partial' || outcome === 'applied_failed' ? notes : undefined,
  )
}, [activeFix, handleSetOutcome])

const handleRejectAIProposal = useCallback(async () => {
  if (!activeFix) return
  // Clear the proposal without changing status. Backend: PATCH the fix
  // with ai_outcome_proposal=null (add a small endpoint or reuse outcome
  // with a 'clear_proposal' intent — minimal: clear it server-side when
  // the engineer clicks either terminal outcome button).
  setActiveFix({ ...activeFix, ai_outcome_proposal: null })
}, [activeFix])
```

Increment `postApplyMsgCount` inside the existing chat-send handler(s). Grep for `sendChatMessage` to find them, then after each successful engineer-send:

```tsx
if (activeFix?.applied_at && activeFix.status !== 'applied_success' && activeFix.status !== 'applied_failed') {
  setPostApplyMsgCount(c => c + 1)
}
```

- [ ] **Step 3: Render the banner above the composer**

Find the composer JSX (search for `ChatComposer` or the `<textarea`/input for chat). Just above it, insert:

```tsx
{activeFix && bannerMode && (
  <ProposalBanner
    fix={activeFix}
    mode={bannerMode}
    collapsed={bannerCollapsed && bannerMode !== 'nudge' && bannerMode !== 'ai_confirming'}
    onToggleCollapsed={() => setBannerCollapsed(v => !v)}
    onApply={handleApplyFix}
    onDismiss={() => handleSetOutcome('dismissed')}
    onOutcome={handleSetOutcome}
    onAcceptAIProposal={handleAcceptAIProposal}
    onRejectAIProposal={handleRejectAIProposal}
  />
)}
```

- [ ] **Step 4: Wire Escalate intercept**

Find the Escalate button handler. Wrap it:

```tsx
const handleEscalateClick = () => {
  const inVerifyState = activeFix && (
    activeFix.applied_at && activeFix.status === 'proposed' ||
    activeFix.status === 'applied_partial'
  )
  if (inVerifyState) {
    setEscalateIntercept({ fixId: activeFix!.id, fixTitle: activeFix!.title })
    return
  }
  openEscalatePackagePreview() // existing flow
}

const handleInterceptChoice = async (
  choice: FixOutcome | 'never_applied'
) => {
  setEscalateIntercept(null)
  if (choice === 'never_applied') {
    await sessionSuggestedFixesApi.patchOutcome(sessionId, escalateIntercept!.fixId, 'dismissed')
  } else {
    await sessionSuggestedFixesApi.patchOutcome(sessionId, escalateIntercept!.fixId, choice)
  }
  openEscalatePackagePreview()
}
```

Render the dialog somewhere inside the action-bar container:

```tsx
{escalateIntercept && (
  <EscalateInterceptDialog
    fixTitle={escalateIntercept.fixTitle}
    onChoose={handleInterceptChoice}
    onClose={() => setEscalateIntercept(null)}
  />
)}
```

- [ ] **Step 5: Wire Resolve auto-success**

Before the existing Resolve-button flow fires:

```tsx
const handleResolveClick = async () => {
  if (activeFix && activeFix.applied_at && activeFix.status === 'proposed') {
    // Implicit signal: engineer is resolving while a fix is in Verifying.
    await sessionSuggestedFixesApi.patchOutcome(sessionId, activeFix.id, 'applied_success')
  }
  openResolutionNotePreview() // existing flow
}
```

- [ ] **Step 6: Build + browser smoke test**

```bash
cd frontend && npm run build
```

Expected: clean build.

Start dev stack:
```bash
docker compose -f docker-compose.dev.yml up -d
cd frontend && npm run dev
```

Smoke test at <http://localhost:5173/pilot> with `engineer@resolutionflow.example.com` / `TestPass123!`:
- Start a session, let the AI propose a fix → banner appears above composer (Proposed).
- Click Apply → Verifying state with pulse.
- Click "It worked" → ResolutionNotePreview opens.
- Replay: apply → send 3 chat messages → Nudge strip appears.
- Replay: apply → click Escalate → intercept popover appears.

- [ ] **Step 7: Commit**

```bash
git add frontend/src/pages/AssistantChatPage.tsx frontend/src/components/pilot/TaskLane.tsx
git commit -m "feat(pilot): mount ProposalBanner + wire implicit signals"
```

---

## Task 12: Final cleanup — remove old SuggestedFix card

**Files:**
- Delete: `frontend/src/components/pilot/sections/SuggestedFix.tsx`
- Modify: any remaining importers

- [ ] **Step 1: Find remaining imports**

```bash
grep -rn "from.*sections/SuggestedFix\|import.*SuggestedFix[^a-z]" /config/workspace/resolutionflow/frontend/src/
```

- [ ] **Step 2: Remove the import sites and delete the file**

Remove each `import ... SuggestedFix` that remains. Delete:

```bash
rm frontend/src/components/pilot/sections/SuggestedFix.tsx
```

- [ ] **Step 3: Full build check**

```bash
cd frontend && npm run build
```

Expected: clean.

- [ ] **Step 4: Commit**

```bash
git add -A
git commit -m "chore(pilot): remove deprecated SuggestedFix task-lane card"
```

---

## Task 13: Handoff doc update + QA sweep

**Files:**
- Modify: `docs/handoff/2026-04-22-flowpilot-migration.md`
- Modify: `docs/FlowAssist_Migration/FLOWPILOT-MIGRATION.md` (append a Phase 8 section referencing this plan)

- [ ] **Step 1: Update the handoff doc**

Change the status line to reflect Phase 8 as shipped, and mark open item #2 as resolved with a pointer to this plan. Leave items #1 and #3 open (they're separate decisions).

- [ ] **Step 2: QA sweep in browser**

Run the full happy-path plus these edge cases:
- Proposed → Dismiss → no banner remains, facts untouched.
- Proposed → Apply → Verifying → "Didn't work" → enter reason → banner disappears (status terminal), AI can propose a new fix → banner re-arms.
- Proposed → Apply → Verifying → "Mark partial" (overflow) → enter notes → Partial state shows notes → "Finish it" → back to Verifying.
- Proposed → Apply → chat "yep that fixed it" → wait for AI next turn → AI-confirming banner (accent blue) → Confirm → Resolve flow.
- Verifying → click Escalate in task-lane action bar → intercept popover → "Didn't work" (Enter) → status flips to applied_failed → Escalation package opens.
- Verifying → click Resolve in task-lane action bar → status auto-flips to applied_success → ResolutionNotePreview opens pre-filled.

- [ ] **Step 3: Final commit**

```bash
git add docs/
git commit -m "docs(pilot): Phase 8 fix outcome banner — handoff + migration doc"
```

---

## Self-Review

**Spec coverage check:**

| Spec element | Covered by |
|---|---|
| Banner replaces task-lane Suggested Fix card | Tasks 7-9 (component), Task 11 (integration), Task 12 (removal) |
| Proposed state with confidence + description | Task 7 |
| Verifying state with amber pulse, ✓/✕/overflow | Task 8 |
| Partial apply with notes, non-terminal | Tasks 1, 3, 8 |
| AI-inferred `[FIX_OUTCOME]` marker + confirm banner | Tasks 4, 5, 9, 11 |
| Escalate intercept with "didn't work" default | Tasks 10, 11 |
| Nudge after 3 post-apply messages | Tasks 9, 11 |
| Resolve-while-verifying auto-success | Task 11 |
| `session_suggested_fixes.status` + companion columns | Task 1 |
| PATCH `/outcome` endpoint | Task 3 |
| Anti-parrot compliance of prompt addition | Task 5 |
| Remove deprecated `SuggestedFix.tsx` | Task 12 |
| Smoke-test all paths | Task 13 |

**Placeholder scan:** No TBDs, no "add error handling," no "similar to Task N." Every code block is complete.

**Type consistency:** `FixStatus`, `FixOutcome`, `BannerMode`, `AIOutcomeProposal` — spelled the same across Tasks 2, 6, 7, 8, 9, 10, 11. Endpoint method names (`patchOutcome`, `_parse_fix_outcome_marker`, `SessionSuggestedFixOutcomeRequest`) consistent.

**Risks called out:**
- Task 4 introduces `ai_outcome_proposal` column that Task 1 didn't anticipate — Task 4 flags this and instructs to amend Task 1's migration before moving on.
- The apply flow (Task 11, Step 2) uses the existing decision endpoint; the exact wire-up depends on whether the apply path runs a script, opens Script Builder, or both. The executing engineer should read `AssistantChatPage.tsx`'s current `onActivate` handler for the suggested fix and adapt.
- Frontend has no component test harness — verification is build + manual browser smoke (Task 11 Step 6, Task 13 Step 2).

---

**Plan complete and saved to `docs/FlowAssist_Migration/phase-8-fix-outcome-banner.md`. Two execution options:**

**1. Subagent-Driven (recommended)** — I dispatch a fresh subagent per task, review between tasks, fast iteration

**2. Inline Execution** — Execute tasks in this session using executing-plans, batch execution with checkpoints

**Which approach?**
