chore(security): remove committed secrets/dumps, .env-based config, hardened deploy webhook

- Delete backups/*.dump and all real credentials from README/docs
  (prod MinIO creds, Casdoor passwords, server IP, admin password)
- All stack secrets now come from git-ignored .env (.env.example added);
  docker-compose.prod.yml refuses to boot without them (${VAR:?})
- seed_casdoor.py: bcrypt password hashing, generated console/client secrets
- Harden infra/deploy-webhook: HMAC-verified Gitea webhook receiver
  + systemd unit + README (replaces unauthenticated deploy endpoint)
- docs/SECRET-MANAGEMENT.md: secret inventory + rotation checklist

docs/casdoor-auth.md

@@ -12,7 +12,7 @@ scenarios, test results, and how to manage the system yourself.
 |---|---|---|
 | App (frontend) | http://localhost (Traefik edge; production: your domain) | — |
 | API (backend) | http://localhost:8000 (Swagger: `/docs`) | — |
-| Casdoor console | http://localhost:8080 | **admin / 123** (built-in org) |
+| Casdoor console | http://localhost:8080 | admin credentials come from `CASDOOR_ADMIN_PW` when running the seeder — never committed |
 | Casdoor OIDC discovery | http://localhost:8080/.well-known/openid-configuration | — |
 | Casdoor public JWKS | http://localhost:8080/.well-known/jwks | — |
 | In-network Casdoor (from the api container) | http://casdoor:8000 | — |
@@ -22,13 +22,13 @@ scenarios, test results, and how to manage the system yourself.
 
 | Username | Password | Casdoor org | App role (our `users` table) |
 |---|---|---|---|
-| `razaei` | `123456` | inventory | `admin` (super user) |
-| `mousavi` | `123456` | inventory | `procurement_manager` (مدیر تدارکات) |
-| `mohaghegh` | `123456` | inventory | `pm` (مدیر پروژه، بدون پروژه) |
-| `tester` | `123456` | inventory | `pm` (مدیر پروژه — پروژه «تست») |
+| `razaei` | `CASDOOR_SEED_PASSWORD` | inventory | `admin` (super user) |
+| `mousavi` | `CASDOOR_SEED_PASSWORD` | inventory | `procurement_manager` (مدیر تدارکات) |
+| `mohaghegh` | `CASDOOR_SEED_PASSWORD` | inventory | `pm` (مدیر پروژه، بدون پروژه) |
+| `tester` | `CASDOOR_SEED_PASSWORD` | inventory | `pm` (مدیر پروژه — پروژه «تست») |
 
-These users are created by `backend/tools/seed_casdoor.py` (idempotent — safe
-to re-run).
+Passwords are stored bcrypt-hashed (passwordType `bcrypt`). These users are
+created by `backend/tools/seed_casdoor.py` (idempotent — safe to re-run).
 
 ---
 
@@ -95,7 +95,7 @@ identity only.** No new authorization model was introduced.
   the OIDC client. Grant types: `authorization_code`, `refresh_token`,
   `password`. Token format JWT (so the backend can verify via JWKS).
 - **Casdoor Organization** (`inventory`): the tenant; every app user belongs
-  to it. (The Casdoor console admin `admin/123` lives in the separate
+  to it. (The Casdoor console admin lives in the separate
   `built-in` org.)
 - **User — two records per person:**
   1. Casdoor user (login credential: name + password).
@@ -158,7 +158,7 @@ After that, log in as the admin and use the Organization panel
 
 | Test | Action | Result | Evidence |
 |---|---|---|---|
-| 1 | Login: `POST /api/v1/auth/login` (tester/123456) | **PASS** | 200, JWT + profile returned |
+| 1 | Login: `POST /api/v1/auth/login` (tester / CASDOOR_SEED_PASSWORD) | **PASS** | 200, JWT + profile returned |
 | 2 | Authenticated API: `GET /users/me` with token | **PASS** | 200, role `pm` + project «تست» |
 | 3 | No token: `GET /inventory/warehouses` | **PASS** | 401 `UNAUTHORIZED` |
 | 4 | Invalid token: corrupted Bearer | **PASS** | 401 `UNAUTHORIZED` «توکن نامعتبر است» |
@@ -179,7 +179,7 @@ After that, log in as the admin and use the Organization panel
 | 6 | Organization exists | ✅ `inventory` |
 | 7 | Application exists | ✅ `inventory-app` |
 | 8 | Client exists | ✅ `inventory-app-client` (grants incl. `password`) |
-| 9 | Test users exist | ✅ razaei, mousavi, mohaghegh, tester (password 123456) |
+| 9 | Test users exist | ✅ razaei, mousavi, mohaghegh, tester (password: CASDOOR_SEED_PASSWORD) |
 | 10 | Redirect URI matches | ✅ N/A for the in-page flow (redirects unused). The seeded app holds the legacy `http://localhost:3000/login`; the seeder now defaults to `http://localhost/login` |
 | 11 | OIDC works | ✅ discovery doc + token endpoint + JWT issuance verified |
 | 12 | PKCE works | ➖ **N/A** — the PKCE/redirect flow was replaced by the in-page password-grant login (per the redesign spec); nothing to verify |
@@ -270,7 +270,7 @@ After that, log in as the admin and use the Organization panel
 
 ## 9. Managing Casdoor yourself
 
-- **Console:** http://localhost:8080 — log in as **admin / 123**. From there
+- **Console:** http://localhost:8080 — log in as the admin (credentials from the seeder run). From there
   you can manage Organizations, Users, Applications, Providers, Certificates.
 - **Seeding** (org `inventory`, app `inventory-app`, the four users) —
   re-runnable at any time: