feat(acp): sqlc queries (agent_kinds + sessions + events) + generated code

internal/acp/queries/agent_kinds.sql

@@ -0,0 +1,50 @@
+-- name: CreateAgentKind :one
+INSERT INTO acp_agent_kinds (
+  id, name, display_name, description, binary_path, args, encrypted_env, enabled, created_by
+) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+RETURNING id, name, display_name, description, binary_path, args, encrypted_env,
+          enabled, created_by, created_at, updated_at;
+
+-- name: GetAgentKindByID :one
+SELECT id, name, display_name, description, binary_path, args, encrypted_env,
+       enabled, created_by, created_at, updated_at
+FROM acp_agent_kinds
+WHERE id = $1;
+
+-- name: GetAgentKindByName :one
+SELECT id, name, display_name, description, binary_path, args, encrypted_env,
+       enabled, created_by, created_at, updated_at
+FROM acp_agent_kinds
+WHERE name = $1;
+
+-- name: ListAgentKinds :many
+SELECT id, name, display_name, description, binary_path, args, encrypted_env,
+       enabled, created_by, created_at, updated_at
+FROM acp_agent_kinds
+ORDER BY created_at DESC;
+
+-- name: ListEnabledAgentKinds :many
+SELECT id, name, display_name, description, binary_path, args, encrypted_env,
+       enabled, created_by, created_at, updated_at
+FROM acp_agent_kinds
+WHERE enabled = TRUE
+ORDER BY name ASC;
+
+-- name: UpdateAgentKind :one
+UPDATE acp_agent_kinds
+SET display_name  = $2,
+    description   = $3,
+    binary_path   = $4,
+    args          = $5,
+    encrypted_env = $6,
+    enabled       = $7,
+    updated_at    = now()
+WHERE id = $1
+RETURNING id, name, display_name, description, binary_path, args, encrypted_env,
+          enabled, created_by, created_at, updated_at;
+
+-- name: DeleteAgentKind :exec
+DELETE FROM acp_agent_kinds WHERE id = $1;
+
+-- name: CountAgentKindUsage :one
+SELECT COUNT(*) FROM acp_sessions WHERE agent_kind_id = $1;