fix: repair CI pipeline — Rust 1.85, SQLite test isolation, missing model imports

### Problems Fixed

**1. Contracts Check (Anchor) — edition2024 error**
`clap_lex-1.1.0` requires Cargo feature `edition2024`, which is not
available in Rust 1.76. Updated to Rust 1.85 in both `ci.yml` and
`contracts/rust-toolchain.toml`.

**2. Backend Tests (pytest) — 204 failures, 125 errors**
Root causes:
- CI injected `DATABASE_URL=postgresql://...` as step-level env,
  conflicting with conftest.py's SQLite override. Removed the Postgres
  env vars and service — tests use in-memory SQLite as conftest intends.
- Three model files with DB tables (`contributor_webhook`,
  `wallet_session`, `webhook_log`) were not imported in `init_db()`,
  so their tables were never created by `create_all()`.
- `init_db()` silently swallowed all exceptions, causing missing-table
  errors to cascade as hundreds of unrelated test failures. Now re-raises
  in CI/test environments for immediate, clear failure.

### Changes
- `.github/workflows/ci.yml`: Rust 1.76 → 1.85, remove Postgres service
  and DATABASE_URL override
- `backend/app/database.py`: Add missing model imports, fail-fast in CI
- `contracts/rust-toolchain.toml`: Channel 1.76 → 1.85

Author: LaphoqueRC

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ concurrency:
 env:
   PYTHON_VERSION: '3.11'
   NODE_VERSION: '20'
-  RUST_VERSION: '1.76'
+  RUST_VERSION: '1.85'
 
 jobs:
   # ==================== BACKEND (Python/FastAPI) ====================
@@ -45,20 +45,6 @@ jobs:
   backend-tests:
     name: Backend Tests (pytest)
     runs-on: ubuntu-latest
-    services:
-      postgres:
-        image: postgres:15
-        env:
-          POSTGRES_USER: test
-          POSTGRES_PASSWORD: test
-          POSTGRES_DB: test
-        ports:
-          - 5432:5432
-        options: >-
-          --health-cmd pg_isready
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -82,8 +68,6 @@ jobs:
         run: pytest tests/ -v --tb=short --cov=app --cov-report=xml --cov-report=term-missing
         env:
           PYTHONPATH: .
-          DATABASE_URL: postgresql://test:test@localhost:5432/test
-          TEST_DATABASE_URL: postgresql+asyncpg://test:test@localhost:5432/test
           SECRET_KEY: test-secret-key-for-ci
 
   # ==================== FRONTEND (React/TypeScript) ====================

backend/app/database.py

@@ -6,6 +6,7 @@
 """
 
 import os
+import sys
 import uuid
 import logging
 from typing import AsyncGenerator
@@ -176,13 +177,21 @@ async def init_db() -> None:
             from app.models.lifecycle import BountyLifecycleLogDB  # noqa: F401
             from app.models.escrow import EscrowTable, EscrowLedgerTable  # noqa: F401
             from app.models.boost import BountyBoostTable  # noqa: F401
+            from app.models.contributor_webhook import ContributorWebhookDB  # noqa: F401
+            from app.models.wallet_session import WalletSession, SiwsNonce  # noqa: F401
+            from app.models.webhook_log import WebhookEventLogDB  # noqa: F401
 
             # NOTE: create_all is idempotent (skips existing tables). For
             # production schema changes use ``alembic upgrade head`` instead.
             await conn.run_sync(Base.metadata.create_all)
 
             logger.info("Database schema initialized successfully")
     except Exception as e:
+        # In test/CI environments, schema failures should be fatal so that
+        # missing-table errors surface immediately instead of cascading
+        # as hundreds of confusing test failures.
+        if os.getenv("CI") or "pytest" in sys.modules:
+            raise
         logger.warning(f"Database init warning (non-fatal): {e}")
         # Non-fatal -- tables may already exist. In-memory services work without DB.
 

contracts/rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.76"
+channel = "1.85"
 components = ["rustfmt", "clippy"]