feat: restore headless cli on shared service

[ksamaschke]

Summary

• route headless CLI diagnostics and catalog access through the shared application service
• reframe CLI help around headless automation while demoting browser-era serve/launch paths
• add focused CLI shared-service contract coverage and stabilize the API readiness regression test

Testing

• npm run clean:compiled-tests && ./node_modules/.bin/tsc -p tsconfig.json && node --test dist/tests/installer/cli-shared-service-red-phase.test.js dist/tests/installer/bootstrap-launch.test.js dist/tests/installer/cli-serve.test.js dist/tests/installer/cli-skills-publish.test.js dist/tests/installer/installations.test.js
• PATH="/Users/karsten/Work/Development/intelligentcode-ai/intelligent-code-agents/node_modules/.bin:$PATH" npm test

Tracking

• closes Headless CLI on shared application service #190
• closes [RED] Headless CLI on shared application service #191
• closes [GREEN] Headless CLI on shared application service #192
• closes [REFACTOR] Headless CLI on shared application service #193

[ksamaschke]

ICA-REVIEW
ICA-REVIEW-RECEIPT
Reviewer-Stage: 3 (temp checkout)
Reviewer-Agent: reviewer (subagent)
PR: #194
Base: dev
Head-SHA: 3d55377
Date-UTC: 2026-03-14T07:28:09Z

Findings: 0
NO FINDINGS

Checks/Tests:

• isolated temp-checkout diff review (PASS)
• npm test (PASS, local branch validation before PR)
• required GitHub checks: memory-protection (PASS)

Notes:

• No additional required checks were configured on this PR beyond memory-protection.

Result: PASS

[ksamaschke]

ICA-REVIEW
ICA-REVIEW-RECEIPT
Reviewer-Stage: 3 (temp checkout)
Reviewer-Agent: reviewer (subagent)
PR: #194
Base: dev
Head-SHA: ab0e0dc
Date-UTC: 2026-03-14T07:35:21Z

Findings: 0
NO FINDINGS

Checks/Tests:

• isolated temp-checkout diff review (PASS)
• focused post-rebase verification: cli-shared-service-red-phase, cli-serve, api-security (PASS)
• GitHub checks: test (PASS), memory-protection (PASS)

Notes:

• Rebase kept the newer desktop-first CLI removal messaging from dev and preserved the shared-service contract changes from this PR.

Result: PASS