CL-1753 | Add instant rollback feature support for Launch CLI

[AryanBansal-launch]

No description provided.

[github-actions]

🔒 Security Scan Results

ℹ️ Note: Only vulnerabilities with available fixes (upgrades or patches) are counted toward thresholds.

Check Type	Count (with fixes)	Without fixes	Threshold	Result
🔴 Critical Severity	0	0	10	✅ Passed
🟠 High Severity	0	0	25	✅ Passed
🟡 Medium Severity	0	0	500	✅ Passed
🔵 Low Severity	0	0	1000	✅ Passed

⏱️ SLA Breach Summary

✅ No SLA breaches detected. All vulnerabilities are within acceptable time thresholds.

Severity	Breaches (with fixes)	Breaches (no fixes)	SLA Threshold (with/no fixes)	Status
🔴 Critical	0	0	15 / 30 days	✅ Passed
🟠 High	0	0	30 / 120 days	✅ Passed
🟡 Medium	0	0	90 / 365 days	✅ Passed
🔵 Low	0	0	180 / 365 days	✅ Passed

✅ BUILD PASSED - All security checks passed

[Copilot]

Pull request overview

Adds an “instant rollback” capability to the Launch CLI by introducing a new launch rollback command backed by new GraphQL query/mutation fields, plus unit tests to validate core flows.

Changes:

• Added launch rollback command to select an environment + eligible deployment, review, confirm, and trigger rollback via GraphQL.
• Extended GraphQL query/mutation definitions to support rollback-specific fields and the rollback mutation.
• Added Jest + Mocha/Sinon unit tests for rollback behavior and updated .talismanrc allowlist checksums for the new test files.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/commands/launch/rollback.ts	New rollback command implementation (selection, review, mutation).
src/graphql/queries.ts	Adds rollback-related fields to deployment/environment queries (behind a skip flag).
src/graphql/mutation.ts	Adds rollbackDeploymentMutation and exports it.
src/commands/launch/rollback.test.ts	Jest unit tests covering rollback flows (confirm, mutation success/failure, eligibility).
test/unit/commands/rollback.test.ts	Mocha/Sinon tests for CLI execution/prompting paths.
.talismanrc	Updates checksum allowlist for newly added test files.

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