feat(rewrite): bootstrap monorepo Bun + port domain layer ke TypeScript

Mulai migrasi Zesdex dari Rust ke TypeScript/Bun.

- Root workspace package.json, tsconfig strict, bun.lock, gitignore fix
- Paket @zesdex/domain (apps/packages/domain):
  - core: ChatMessage/Conversation/ToolCall/SseParser/repairJson/
    sanitizeToolArguments/UsageStats/Store/DomainError
  - auth: Session/SessionId/SessionLock/OAuth + repository & service interfaces
  - cms: AppConfig/Settings/SettingsPatch/Memory/EditLog + repository &
    service interfaces
  - agent: TurnEvent/SessionRuntime/AgentTurnParams/AgentProgress/prompt
  - subagent & workflow models
- Wire-shape JSON disamakan dengan Rust (serde rename/flatten/skip_if)
- 27 unit test Bun port dari test Rust (SseParser, repair_json, resolve_effective_model, session id)

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

apps/packages/domain/src/workflow/mod.ts

@@ -0,0 +1,37 @@
+/** Workflow and Hive-mind domain models. Mirrors `workflow/mod.rs`. */
+
+/** A single phase in a parsed workflow script. */
+export interface WorkflowPhase {
+  name: string;
+  directive: string;
+}
+
+/** A parsed workflow script with named phases. */
+export interface WorkflowScript {
+  name: string;
+  phases: WorkflowPhase[];
+}
+
+/** A directive for a single processing node in the hive mind. */
+export interface NodeDirective {
+  directive: string;
+  access_tier: string;
+}
+
+/** A cognitive cycle plan — ordered cycles of parallel node directives. */
+export interface CognitiveCyclePlan {
+  cycles: NodeDirective[][];
+}
+
+/** A single cycle in a cognitive cycle plan. */
+export interface CognitiveCycle {
+  index: number;
+  directives: NodeDirective[];
+}
+
+/** Output from a single hive-mind node after a cycle completes. */
+export interface NodeOutput {
+  id: string;
+  directive: string;
+  output: string;
+}