feat: add Orchestrator Loop — phased plan execution with team agents

Adds a new autonomous loop that accepts high-level goals, generates
phased execution plans via AI, and executes them step-by-step with
verification gates between phases.

Core components:
- OrchestratorLoop: state machine (idle→planning→approval→executing→verifying→completed)
- OrchestratorPlanner: plan generation via PlanOrchestrator, Kahn's algorithm phase grouping
- OrchestratorVerifier: phase verification (strict/moderate/lenient modes)
- Prompt templates for phase execution, team delegation, verification, replanning

API (10 endpoints):
- POST start/approve/reject/pause/resume/stop
- GET status/plan
- POST phase/:id/skip, phase/:id/retry

Frontend: orchestrator-panel.js with SSE-driven state, phase progress, task tracking

Tests: 22 tests (18 route + 4 unit), all passing. Typecheck/lint/format clean.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/web/schemas.ts

@@ -580,3 +580,31 @@ export type RespawnEnableInput = z.infer<typeof RespawnEnableSchema>;
 export type PushSubscribeInput = z.infer<typeof PushSubscribeSchema>;
 export type PushPreferencesUpdateInput = z.infer<typeof PushPreferencesUpdateSchema>;
 export type RalphLoopStartInput = z.infer<typeof RalphLoopStartSchema>;
+
+// ========== Orchestrator Loop ==========
+
+/** POST /api/orchestrator/start */
+export const OrchestratorStartSchema = z.object({
+  goal: z.string().min(1).max(100000),
+  config: z
+    .object({
+      plannerModel: z.string().max(100).optional(),
+      researchEnabled: z.boolean().optional(),
+      autoApprove: z.boolean().optional(),
+      maxPhaseRetries: z.number().int().min(1).max(10).optional(),
+      phaseTimeoutMs: z.number().int().min(60000).max(7200000).optional(),
+      enableTeamAgents: z.boolean().optional(),
+      maxParallelSessions: z.number().int().min(1).max(10).optional(),
+      verificationMode: z.enum(['strict', 'moderate', 'lenient']).optional(),
+      compactBetweenPhases: z.boolean().optional(),
+    })
+    .optional(),
+});
+
+/** POST /api/orchestrator/reject */
+export const OrchestratorRejectSchema = z.object({
+  feedback: z.string().min(1).max(10000),
+});
+
+export type OrchestratorStartInput = z.infer<typeof OrchestratorStartSchema>;
+export type OrchestratorRejectInput = z.infer<typeof OrchestratorRejectSchema>;