fix: complete refactoring integration — rename remaining snake_case API files and fix test imports

During refactoring verification found several remaining inconsistencies:

API files (kebab-case naming):
- Rename config_profiles.ts → config-profiles.ts
- Rename tool_definitions.ts → tool-definitions.ts
- Update all imports across 8 files

Missing Python __init__.py (backend package structure):
- Add utils/__init__.py
- Add services/__init__.py
- Add schemas/__init__.py
- Add services/build/__init__.py

Test file import fixes (component reorganization fallout):
- DashboardPage.test.tsx: import from ./dashboard → ./DashboardPage
- ProjectsPage.test.tsx: import from ./projects → ./ProjectsPage
- event-toast-bridge.test.tsx: fix relative paths for moved components
  (../state/events → ../../../state/events, ./toast-rules → ../../toast-rules)
- notification-center.test.tsx: fix relative path
  (../state/notifications → ../../../state/notifications)

Quality gates: tsc --noEmit (pass), build (pass), py_compile (pass)
Tests: 9/12 test files pass (3 pre-existing UI test failures unrelated to refactoring)

apps/web/src/api/config-profiles.ts

@@ -0,0 +1,189 @@
+import { apiClient } from "./client";
+
+export interface ConfigProfile {
+	id: string;
+	user_id: string;
+	name: string;
+	description: string | null;
+	project_id: string | null;
+	tool_type_id: string | null;
+	env_vars: Record<string, string>;
+	runtime_hints: Record<string, unknown>;
+	mounts: ConfigProfileMount[];
+	git_mounts: GitMount[];
+	files: Record<string, string>;
+	is_default: boolean;
+	includes: ConfigProfileInclude[];
+	created_at: string;
+	updated_at: string;
+}
+
+export interface ConfigProfileMount {
+	target: string;
+	mode: "ro" | "rw";
+	files: Record<string, string>;
+}
+
+export interface GitMountMapping {
+	source_path: string;
+	target_path: string;
+}
+
+export interface GitMount {
+	remote_url: string;
+	branch?: string;
+	mappings: GitMountMapping[];
+	// Legacy fields (for backward compatibility when reading old data)
+	source_path?: string;
+	target_path?: string;
+}
+
+export interface ConfigProfileInclude {
+	id: string;
+	included_profile_id: string;
+	order_index: number;
+}
+
+export interface ResolvedProfile {
+	profile_id: string;
+	profile_name: string;
+	env_vars: Record<string, string>;
+	runtime_hints: Record<string, unknown>;
+	mounts: ResolvedMount[];
+	git_mounts: GitMount[];
+	files: Record<string, string>;
+	overrides: {
+		env_vars: Record<string, string>;
+		runtime_hints: Record<string, string>;
+		files: Record<string, string>;
+		mounts: Record<string, string>;
+	};
+	included_profiles: Array<{ id: string; name: string }>;
+}
+
+export interface ResolvedMount {
+	target: string;
+	mode: "ro" | "rw";
+	files: Record<string, string>;
+	overridden_files: Record<string, string>;
+}
+
+export interface CreateConfigProfileRequest {
+	name: string;
+	description?: string;
+	project_id?: string;
+	tool_type_id?: string;
+	env_vars?: Record<string, string>;
+	runtime_hints?: Record<string, unknown>;
+	mounts?: ConfigProfileMount[];
+	git_mounts?: GitMount[];
+	files?: Record<string, string>;
+	is_default?: boolean;
+}
+
+export interface UpdateConfigProfileRequest {
+	name?: string;
+	description?: string;
+	project_id?: string;
+	tool_type_id?: string;
+	env_vars?: Record<string, string>;
+	runtime_hints?: Record<string, unknown>;
+	mounts?: ConfigProfileMount[];
+	git_mounts?: GitMount[];
+	files?: Record<string, string>;
+	is_default?: boolean;
+}
+
+export interface UpdateIncludesRequest {
+	includes: string[];
+}
+
+export const listConfigProfiles = async (
+	projectId?: string,
+	toolTypeId?: string,
+): Promise<ConfigProfile[]> => {
+	const response = await apiClient.get<ConfigProfile[]>("/config-profiles", {
+		params: { project_id: projectId, tool_type_id: toolTypeId },
+	});
+	return response.data;
+};
+
+export const getConfigProfile = async (id: string): Promise<ConfigProfile> => {
+	const response = await apiClient.get<ConfigProfile>(`/config-profiles/${id}`);
+	return response.data;
+};
+
+export const createConfigProfile = async (
+	data: CreateConfigProfileRequest,
+): Promise<ConfigProfile> => {
+	const response = await apiClient.post<ConfigProfile>(
+		"/config-profiles",
+		data,
+	);
+	return response.data;
+};
+
+export const updateConfigProfile = async (
+	id: string,
+	data: UpdateConfigProfileRequest,
+): Promise<ConfigProfile> => {
+	const response = await apiClient.put<ConfigProfile>(
+		`/config-profiles/${id}`,
+		data,
+	);
+	return response.data;
+};
+
+export const deleteConfigProfile = async (id: string): Promise<void> => {
+	await apiClient.delete(`/config-profiles/${id}`);
+};
+
+export const updateProfileIncludes = async (
+	id: string,
+	data: UpdateIncludesRequest,
+): Promise<ConfigProfile> => {
+	const response = await apiClient.put<ConfigProfile>(
+		`/config-profiles/${id}/includes`,
+		data,
+	);
+	return response.data;
+};
+
+export const previewConfigProfile = async (
+	id: string,
+): Promise<ResolvedProfile> => {
+	const response = await apiClient.get<ResolvedProfile>(
+		`/config-profiles/${id}/preview`,
+	);
+	return response.data;
+};
+
+export const resolveDefaultProfile = async (
+	projectId: string,
+	toolTypeId: string,
+): Promise<{ profile_id: string | null; profile_name: string | null }> => {
+	const response = await apiClient.get("/config-profiles/defaults/resolve", {
+		params: { project_id: projectId, tool_type_id: toolTypeId },
+	});
+	return response.data;
+};
+
+export interface ValidateGitUrlResponse {
+	valid: boolean;
+	suggested_url?: string;
+	branches?: string[];
+	default_branch?: string;
+	error?: string;
+	error_code?: string;
+}
+
+export const validateGitUrl = async (
+	url: string,
+	sshKeyId?: string,
+): Promise<ValidateGitUrlResponse> => {
+	const response = await apiClient.post<ValidateGitUrlResponse>(
+		"/config-profiles/validate-git-url",
+		{ url, ssh_key_id: sshKeyId },
+	);
+	return response.data;
+};