refactor: Align vocabulary — component → program / deployment

Canonical terms (see docs/registry.md glossary):
- program: any catalog entry (tool/daemon/frontend) — the software
- service / job: how a program is deployed (systemd .service / .timer)
- deployment: umbrella for the unified service+job+program view

Changes:
- core: ServiceSpec/JobSpec component: → program: (component accepted as
  back-compat validation_alias); DeployedComponent → Deployment.
- api: ComponentSummary/Detail → DeploymentSummary/Detail; GET /components
  → /deployments; GatewayRoute.component → program; GatewayInfo
  .component_count → deployment_count; ServiceActionResponse/action keys
  component → program.
- app: matching type renames, /components → /deployments hook, route
  /component/:name → /deployment/:name, GatewayRoute.program.
- docs: component-registry.md → registry.md (+ canonical glossary);
  CLAUDE.md endpoint list refreshed (drop removed /tools, add typed
  program/service/job + config routes).

Tests: core 92, cli 24, api 52 green; app build clean; ruff clean.

app/src/components/GatewayPanel.tsx

@@ -73,7 +73,7 @@ export function GatewayPanel({ gateway, statuses }: GatewayPanelProps) {
           </thead>
           <tbody>
             {gateway.routes.map((route) => {
-              const health = statusMap.get(route.component)
+              const health = statusMap.get(route.program)
               return (
                 <tr
                   key={route.path}
@@ -84,10 +84,10 @@ export function GatewayPanel({ gateway, statuses }: GatewayPanelProps) {
                   </td>
                   <td className="px-4 py-2">
                     <Link
-                      to={`/component/${route.component}`}
+                      to={`/deployment/${route.program}`}
                       className="hover:text-[var(--primary)] transition-colors"
                     >
-                      {route.component}
+                      {route.program}
                     </Link>
                   </td>
                   <td className="px-4 py-2 font-mono text-[var(--muted)]">