feat: institutional + support + training admin sections (backend + frontend)

Ship three fully-wired admin areas end-to-end with APIs, seeds, tests and docs.

Backend (new `encoach_lms_api` addon + existing addons):
- Institutional: academic years/terms, departments, admission registers & admissions,
  courses/batches, lessons, fees (terms + student fees + invoicing with income-account
  auto-wiring), gradebook (assignments/grades), library, facilities (encoach.asset),
  student leave, result templates + marksheets (incl. delete-with-cascade).
- Support: `encoach.ticket` model + CRUD/assignee routes; payment records derived
  from `op.student.fees.details` and `account.move`; platform settings backed by
  `encoach.code` and `ir.config_parameter` (packages + grading config).
- Training: `encoach.vocab.item` + `encoach.grammar.rule` (plus progress models)
  with CRUD, pagination, search/level filters, and upsert-style progress endpoints.
  Odoo 19 compatibility: `_sql_constraints` replaced with `@api.constrains`;
  `ValidationError`/`UserError` mapped to HTTP 400.

Frontend:
- Rewire institutional admin pages (Academic Year Manager, Admissions, Courses,
  Lessons, Fees, Gradebook, Library, Facilities, Student Leave, Marksheets,
  Taxonomy, Resources) to real APIs with React Query invalidation and dialogs.
- New typed services: `payments.service.ts`, `platformSettings.service.ts`,
  `training.service.ts`. Updated `fees/gradebook/lms/courseware/taxonomy/
  resources/student-progress/generation` services + related types.
- Rewrite `VocabularyPage`, `GrammarPage`, `PaymentRecordPage`, `SettingsPage`,
  `TicketsPage` to consume live data with search/filter/progress/CRUD flows.
- New shared components: `TaxonomyCascade`, `MaterialViewer`, `teacher/TeacherLibrary`.
- Favicons/branding assets and misc. UX polish across teacher/student pages.

Tooling & QA:
- Seeders: `seed_demo.py`, `seed_demo_data.py`, `seed_institutional.py` (idempotent,
  covers institutional + support + training fixtures incl. income-account wiring).
- API write-flow test suites: `test_write_flows.py` (institutional),
  `test_support_flows.py` (support), `test_training_flows.py` (training),
  `test_ai_full.py`. All suites pass end-to-end.
- Docs: add `docs/PROJECT_SUMMARY.md` with per-section scope, artifacts and QA.
- `.gitignore`: ignore `pgdata_bak_*/`, `frontend/.vite/`, `frontend/dist/`,
  `frontend/node_modules/`.

Made-with: Cursor

.cursor/rules/encoach-project-context.mdc

@@ -0,0 +1,30 @@
+---
+description: EnCoach project context — auto-load summary and update it at end of session
+alwaysApply: true
+---
+
+# EnCoach Project Context
+
+At the **start of every chat**, read `docs/PROJECT_SUMMARY.md` to understand the project state, credentials, architecture, API routes, and how to run the project. This is your primary reference for the EnCoach platform.
+
+At the **end of every chat** (when the user says goodbye, asks to wrap up, or the session's main task is complete), update `docs/PROJECT_SUMMARY.md` with any new information discovered or changes made during the session. This includes:
+
+- New or changed user credentials
+- New API routes or changed endpoints
+- New models or schema changes
+- New modules installed or removed
+- Git state changes (new branches, remotes, pushes)
+- Bug fixes or known issues discovered
+- New pages or components added to frontend
+- Any configuration changes (odoo.conf, .env, etc.)
+
+## Key Facts
+
+- **Backend**: Odoo 19 at `http://127.0.0.1:8069`
+- **Frontend**: Vite React at `http://localhost:8080`
+- **Database**: `encoach_v2` on PostgreSQL 18
+- **Login route**: `POST /api/login` (not `/api/auth/login`)
+- **PostgreSQL binary**: `/Users/yamenahmad/micromamba/envs/odoo19/bin/pg_ctl` (PG 18 — must use this, not conda PG 17)
+- **Node.js**: `/Users/yamenahmad/.local/node/bin/` (must add to PATH)
+- **odoo.conf must have**: `db_name = encoach_v2` and `dbfilter = ^encoach_v2$`
+- **Git branch**: `v4`