Ship skills built-in: bundle the catalogue, assign per hire, force humanizer

Skills no longer come from the user's ~/.agents library - most users have
none, and the CEO branch that compiled the entire catalogue into its
prompt overflowed the model context (1.1MB) and failed every CEO run.

- Bundle "built-in skills/" with the app (extraResources) and stage it
  at startup into <profile>/builtin-skills as one dir-per-skill copy -
  both bundle shapes (SKILL.md dirs and flat category .md files)
  normalize into the same importable layout
- Import the staged catalogue per org at startup and inside onboarding,
  so the CEO's first run already carries it
- Forced house style: resolveRuntimeSnapshot unions the humanizer skill
  into every agent's runtime (CEO included) as a resolution rule - no
  binding row to forget, delete, or bypass; revoke_skill refuses it
- CEO staffs hires with skills: hire_agent accepts a skills array,
  grant_skill/revoke_skill adjust later, list_skills now shows
  descriptions from skill frontmatter
- Kill the c_suite compile-all branch; everyone resolves bindings-only,
  capped at 200k chars with omissions named in the prompt
- Remove the Skills settings page and its import/sync/test IPC surface;
  drop ~/.agents discovery and the AGENTCOMPANY_NEW_SKILLS_ROOT seam in
  favor of AGENTCOMPANY_NEW_BUILTIN_SKILLS_DIR
- Tests: staging/import/forced-resolution/cap units, real-bundle CI
  check, e2e asserts the tab is gone and the catalogue self-imports

src/shared/desktop-api.ts

@@ -49,18 +49,14 @@ import type {
   EditMessageInput,
   ImportFileInput,
   OpenFileInput,
-  ImportSkillDirectoryInput,
   GrantRoleInput,
   LaunchProviderSignInInput,
   LaunchSocialLoginInput,
-  ResolveAgentSkillsInput,
   ResolveMigrationReconciliationInput,
   RunChaosDrillInput,
   RunEvalSuiteInput,
   RunSdlcReviewInput,
-  RunSkillTestsInput,
   RunTaskInput,
-  SyncSkillsFromDiskInput,
   RevokeProviderCredentialInput,
   SaveProviderCredentialInput,
   ConnectComposioToolkitInput,
@@ -152,10 +148,6 @@ export interface DesktopApi {
   createProviderResponse(input: CreateProviderResponseInput): Promise<DesktopResult<AppSnapshot>>;
   streamProviderResponse(input: StreamProviderResponseInput): Promise<DesktopResult<AppSnapshot>>;
   cancelProviderResponse(input: CancelProviderResponseInput): Promise<DesktopResult<AppSnapshot>>;
-  importSkillDirectory(input: ImportSkillDirectoryInput): Promise<DesktopResult<AppSnapshot>>;
-  syncSkillsFromDisk(input: SyncSkillsFromDiskInput): Promise<DesktopResult<AppSnapshot>>;
-  resolveAgentSkills(input: ResolveAgentSkillsInput): Promise<DesktopResult<AppSnapshot>>;
-  runSkillTests(input: RunSkillTestsInput): Promise<DesktopResult<AppSnapshot>>;
   createSocialAccount(input: CreateSocialAccountInput): Promise<DesktopResult<AppSnapshot>>;
   launchSocialLogin(input: LaunchSocialLoginInput): Promise<DesktopResult<null>>;
   createScheduledPost(input: CreateScheduledPostInput): Promise<DesktopResult<AppSnapshot>>;

src/shared/ipc.ts

@@ -33,10 +33,6 @@ export const IPC_CHANNELS = {
   createProviderResponse: "agentcompany:create-provider-response",
   streamProviderResponse: "agentcompany:stream-provider-response",
   cancelProviderResponse: "agentcompany:cancel-provider-response",
-  importSkillDirectory: "agentcompany:import-skill-directory",
-  syncSkillsFromDisk: "agentcompany:sync-skills-from-disk",
-  resolveAgentSkills: "agentcompany:resolve-agent-skills",
-  runSkillTests: "agentcompany:run-skill-tests",
   createSocialAccount: "agentcompany:create-social-account",
   launchSocialLogin: "agentcompany:launch-social-login",
   createScheduledPost: "agentcompany:create-scheduled-post",