v2 foundation: shared contracts, app profile schema, wiring stubs

- projects: app profile columns + one app per org; project_external_git,
  deploy_targets, org_model_grants tables (migration a0f0e1d2c3b4)
- ports + fakes: RepoWorkspace, DeliveryHooks, DeployTarget, Memory,
  ModelGrants, WorkforceBootstrap; AppProfile + AppProfileRepository
- per-workstream wiring (container_org/engine/delivery), config blocks,
  empty routers, delivery worker, MCP/delivery service shells, web stubs
- admin nav derives from ADMIN_ITEMS; plan docs updated for ext4 worktrees

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

docs/plan/TODO-agent-2-ai-workforce.md

@@ -1,6 +1,6 @@
 # TODO — Agent 2: AI Workforce Engine (manager AI, employees, dynamic pipelines, test/commit/push)
 
-- **Worktree:** `/projects/smart-org-wt/agent2` · **Branch:** `agent2/ai-workforce` (already created, already installed)
+- **Worktree:** `/home/mamad/work/smart-org-wt/agent2` · **Branch:** `agent2/ai-workforce` (already created, already installed)
 - **Read first:** `docs/plan/PLAN-v2.md` (all of it, especially §3 and §5). Then read fully:
   `apps/api/app/application/services/workforce_service.py`, `app/domain/workforce/models.py` + `tools.py`,
   `app/interfaces/http/routers/workforce.py`, `app/infrastructure/repositories/workforce.py`,
@@ -15,7 +15,7 @@
   New tables go in `app/infrastructure/db/models_engine.py`. **`db/models.py` is locked**, so new task and
   employee fields go into new 1:1 side tables (see 1.3), never into `tasks`/`employees` columns.
 - **Never touch:** the locked files and the other agents' files. Need something there? → `CHANGE REQUEST` in your report.
-- **Do NOT commit, push, merge or rebase.** Never `cd` outside the worktree, never write to `/tmp`.
+- **Do NOT commit, push, merge or rebase.** Never `cd` outside the worktree, never write to `/tmp`. The worktree is on ext4 (the main repo under /projects is exFAT: no symlinks), so `.venv` and `node_modules` work here; do not copy files to /projects.
 - **After each phase:** run all checks (PLAN-v2 §7.4), write `docs/plan/reports/agent-2-phase-<K>.md`, then STOP and wait.
 
 You consume: `ModelProviderPort` (existing), `ModelGrantPort`, `MemoryPort`, `RepoWorkspacePort`,