refactor: rename files to PascalCase components and kebab-case APIs (Task 4.4)

- Rename all component files to PascalCase matching exported names
- Move components into feature directories (git/, session/, project/, terminal/, workspace/, ui/, layout/)
- Rename all page files to PascalCase with Page suffix
- Rename all API files to kebab-case
- Update all imports across codebase with corrected relative depths
- Preserve git history via git mv

Quality gates: tsc (pass), eslint (pass), 66/74 tests pass (8 pre-existing failures)
Refs: repo-restructure Task 4.4

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

@@ -0,0 +1,77 @@
+import { apiClient } from "./client";
+import type {
+	ConfigFolder,
+	CreateConfigFolderRequest,
+	UpdateConfigFolderRequest,
+	ProjectOverrideRequest,
+} from "../types/config-folder";
+
+export type {
+	ConfigFolder,
+	CreateConfigFolderRequest,
+	UpdateConfigFolderRequest,
+	ProjectOverrideRequest,
+} from "../types/config-folder";
+
+export const listConfigFolders = async (): Promise<ConfigFolder[]> => {
+	const response = await apiClient.get<ConfigFolder[]>("/config-folders");
+	return response.data;
+};
+
+export const getConfigFolder = async (id: string): Promise<ConfigFolder> => {
+	const response = await apiClient.get<ConfigFolder>(`/config-folders/${id}`);
+	return response.data;
+};
+
+export const createConfigFolder = async (
+	data: CreateConfigFolderRequest,
+): Promise<ConfigFolder> => {
+	const response = await apiClient.post<ConfigFolder>("/config-folders", data);
+	return response.data;
+};
+
+export const updateConfigFolder = async (
+	id: string,
+	data: UpdateConfigFolderRequest,
+): Promise<ConfigFolder> => {
+	const response = await apiClient.put<ConfigFolder>(
+		`/config-folders/${id}`,
+		data,
+	);
+	return response.data;
+};
+
+export const deleteConfigFolder = async (id: string): Promise<void> => {
+	await apiClient.delete(`/config-folders/${id}`);
+};
+
+export const addProjectOverride = async (
+	id: string,
+	projectId: string,
+	data: ProjectOverrideRequest,
+): Promise<ConfigFolder> => {
+	const response = await apiClient.post<ConfigFolder>(
+		`/config-folders/${id}/overrides/${projectId}`,
+		data,
+	);
+	return response.data;
+};
+
+export const updateProjectOverride = async (
+	id: string,
+	projectId: string,
+	data: ProjectOverrideRequest,
+): Promise<ConfigFolder> => {
+	const response = await apiClient.put<ConfigFolder>(
+		`/config-folders/${id}/overrides/${projectId}`,
+		data,
+	);
+	return response.data;
+};
+
+export const deleteProjectOverride = async (
+	id: string,
+	projectId: string,
+): Promise<void> => {
+	await apiClient.delete(`/config-folders/${id}/overrides/${projectId}`);
+};