refactor(db): port operations, settings, audit, and misc metadata to sqlc (#84)

* refactor(db): port operations, settings, audit, activity, and misc service metadata to sqlc

Covers the cross-cutting surface: operations board reads, app settings,
notification producers, activity/audit inserts, builds upsert/cancel,
git clone credential resolution, invites, environments, registry auth,
project/service variables, HA resolver, boot sweeps, and admin user ops.
Dynamic filtered lists and Better Auth table probes stay raw by design.

Authored By: TDvorak <[email protected]>

* refactor(db): port apwhy gateway handlers and proxy data plane to sqlc

Final tranche — every static call site now uses generated queries. Raw SQL
remains only where the statement is assembled at runtime (filtered lists,
sparse updates, admin count closure) or probes Better Auth's auth_users
table, which lives outside the local schema.

Authored By: TDvorak <[email protected]>

app/backend/sqlc/queries/operations.sql

@@ -0,0 +1,43 @@
+-- name: ListActiveOperationDeployments :many
+SELECT d.id, d.service_id, s.name AS service_name, p.name AS project_name, d.status,
+       COALESCE(d.image_name, '') AS image, d.error, d.started_at, d.completed_at, d.created_at
+FROM deployments d
+JOIN services s ON s.id = d.service_id
+JOIN projects p ON p.id = s.project_id
+WHERE d.status IN ('queued','pending','building','deploying','rolling_back')
+  AND (p.is_approved OR p.owner_id = $1 OR $2::bool
+    OR EXISTS (SELECT 1 FROM project_members pm WHERE pm.project_id = p.id AND pm.user_id = $1))
+ORDER BY d.created_at ASC;
+
+-- name: ListRecentFailedDeployments :many
+SELECT d.id, d.service_id, s.name AS service_name, p.name AS project_name, d.status,
+       COALESCE(d.image_name, '') AS image, d.error, d.started_at, d.completed_at, d.created_at
+FROM deployments d
+JOIN services s ON s.id = d.service_id
+JOIN projects p ON p.id = s.project_id
+WHERE d.status IN ('failed','cancelled','rolled_back')
+  AND d.updated_at > NOW() - INTERVAL '24 hours'
+  AND (p.is_approved OR p.owner_id = $1 OR $2::bool
+    OR EXISTS (SELECT 1 FROM project_members pm WHERE pm.project_id = p.id AND pm.user_id = $1))
+ORDER BY d.updated_at DESC
+LIMIT 20;
+
+-- name: ListRecentCronRuns :many
+SELECT e.id, j.name AS job_name, j.schedule, e.status, e.started_at, e.finished_at, e.error
+FROM cron_executions e
+JOIN cron_jobs j ON j.id = e.cron_job_id
+JOIN projects p ON p.id = j.project_id
+WHERE e.started_at > NOW() - INTERVAL '24 hours'
+  AND (p.is_approved OR p.owner_id = $1 OR $2::bool
+    OR EXISTS (SELECT 1 FROM project_members pm WHERE pm.project_id = p.id AND pm.user_id = $1))
+ORDER BY e.started_at DESC
+LIMIT 30;
+
+-- name: ListRecentOperationBackups :many
+SELECT b.id, b.database_id, ds.name AS db_name, b.status, b.size, b.created_at, b.completed_at
+FROM database_backups b
+JOIN database_services ds ON ds.id = b.database_id
+WHERE b.created_at > NOW() - INTERVAL '24 hours'
+  AND (ds.user_id = $1 OR $2::bool)
+ORDER BY b.created_at DESC
+LIMIT 20;