feat(pilot): frontend fix-outcome types + patchOutcome API

Extends SessionSuggestedFix with outcome fields (status, applied_at,
verified_at, partial_notes, failure_reason, ai_outcome_proposal) and
adds a patchOutcome method hitting the new backend endpoint.

FixStatus (5 values) + FixOutcome (4 writable values) mirror the
backend Pydantic types and the DB check constraint.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/api/sessionSuggestedFixes.ts

@@ -8,6 +8,25 @@ import apiClient from './client'
 
 export type UserDecision = 'one_off' | 'draft_template' | 'build_template' | 'dismissed'
 
+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
+}
+
 export interface SessionSuggestedFix {
   id: string
   session_id: string
@@ -18,6 +37,12 @@ export interface SessionSuggestedFix {
   ai_drafted_script: string | null
   ai_drafted_parameters: Record<string, unknown> | null
   user_decision: UserDecision | null
+  status: FixStatus
+  applied_at: string | null
+  verified_at: string | null
+  partial_notes: string | null
+  failure_reason: string | null
+  ai_outcome_proposal: AIOutcomeProposal | null
   superseded_at: string | null
   created_at: string
 }
@@ -86,6 +111,27 @@ export const sessionSuggestedFixesApi = {
     return r.data
   },
 
+  /**
+   * Record the outcome of applying a suggested fix. Transition rules:
+   * - from `proposed` or `applied_partial`: any outcome is valid (partial is
+   *   parked, not terminal — engineer may update notes, abandon via dismiss,
+   *   or advance to success/failed).
+   * - from a terminal status (`applied_success`, `applied_failed`, `dismissed`):
+   *   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
+  },
+
   /**
    * Fetch (or get cached) draft markdown for the Resolve note. Backend cache
    * is keyed on state_version, so calling this back-to-back without intervening