feat: direct docker-compose import into projects

POST /projects/:id/import-compose deploys a compose file straight into a
project — no template row required. Well-known DB images become managed
databases attached to the project network under their service name as DNS
alias; other services deploy in dependency order via deployTemplateGraph.

- api: extract composeToSpecs converter (shared by the template
  import-compose preview and the new project endpoint); fix dropped env
  warnings (pointer receiver); replace insertion sort with sort.Strings
- cascade: database_services.project_id links graph-provisioned DBs to
  their project so project delete tears down runtime + row (previously
  leaked container + network)
- cli: new `containr import` group, `import compose <project> <file|->`
- mcp: containr_projects_import_compose tool
- openapi + regenerated frontend types; docs snapshot + CLI.md
- frontend: compose import modal on the project workspace toolbar
- tests: composeToSpecs conversion, ordering, db-image map, warnings

app/backend/sqlc/queries/databases.sql

@@ -35,8 +35,18 @@ FROM database_services
 WHERE user_id = sqlc.arg(user_id) AND LOWER(name) = LOWER(sqlc.arg(name));
 
 -- name: CreateDatabaseService :exec
-INSERT INTO database_services (id, user_id, name, type, status, version, plan, region, public_port, created_at, updated_at)
-VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11);
+INSERT INTO database_services (id, user_id, name, type, status, version, plan, region, public_port, project_id, created_at, updated_at)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12);
+
+-- name: ListDatabaseServicesByProject :many
+SELECT database_services.*
+FROM database_services
+WHERE project_id = $1
+ORDER BY created_at DESC;
+
+-- name: DeleteDatabaseServiceByID :exec
+DELETE FROM database_services
+WHERE id = $1;
 
 -- name: SetDatabaseServicePublicPortByIDAndUser :exec
 UPDATE database_services

app/backend/sqlc/schema.sql

@@ -148,6 +148,7 @@ CREATE TABLE database_services (
     external_ssl BOOLEAN NOT NULL DEFAULT false,
     public_port BOOLEAN NOT NULL DEFAULT false,
     backup_target_id VARCHAR(255),
+    project_id UUID REFERENCES projects(id) ON DELETE CASCADE,
     created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
     updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
 );