feat(fleet): system-type profiles — declarative roster+topology mapping (H2)

Add declarative system-type profiles: framework/fleet/profiles/*.yaml map a
system type to a persona roster + org topology (reports_to, multiplicity).
Profiles are DATA, seeded like roles, so an operator declares a system type and
gets the matching roster from the baseline library with no code change
(NS-9 / AC-NS-6).

- 5 baseline profiles: software-delivery, personal-assistant, research,
  business (company-in-a-box), marketing.
- fleet-profiles.ts: loadProfiles/loadProfile/parseProfile/validateProfile +
  listPersonaClasses (extracts valid classes from the role library by unioning
  inline `class:` markers, LIBRARY.md rows, and role filenames so marker-less
  personas like planner/decomposition resolve).
- CLI: `mosaic fleet profile list|show [--json]`; invalid profiles exit non-zero.
- Spec covers parse/validate, the library-drift guard (every referenced class
  resolves against the real role library), and unknown-class/reports_to rejection.
- install.sh: profiles seed via the existing rsync (comment clarified; the
  preserved top-level `fleet/*.yaml` glob does not shadow fleet/profiles/*.yaml).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packages/mosaic/src/commands/fleet.spec.ts

@@ -82,6 +82,7 @@ describe('registerFleetCommand', () => {
       'init',
       'install',
       'install-systemd',
+      'profile',
       'ps',
       'remove',
       'restart',
@@ -92,6 +93,15 @@ describe('registerFleetCommand', () => {
     ]);
   });
 
+  it('registers the profile subcommand with list and show', () => {
+    const program = buildProgram();
+    const fleet = program.commands.find((command) => command.name() === 'fleet');
+    const profile = fleet!.commands.find((command) => command.name() === 'profile');
+
+    expect(profile).toBeDefined();
+    expect(profile!.commands.map((command) => command.name()).sort()).toEqual(['list', 'show']);
+  });
+
   it('registers the backlog subcommand with its operations', () => {
     const program = buildProgram();
     const fleet = program.commands.find((command) => command.name() === 'fleet');