feat: Add Promotion-Time Attestations for Stella Ops

- Introduced a new document for promotion-time attestations, detailing the purpose, predicate schema, producer workflow, verification flow, APIs, and security considerations.
- Implemented the `stella.ops/promotion@v1` predicate schema to capture promotion evidence including image digest, SBOM/VEX artifacts, and Rekor proof.
- Defined producer responsibilities and workflows for CLI orchestration, signer responsibilities, and Export Center integration.
- Added verification steps for auditors to validate promotion attestations offline.

feat: Create Symbol Manifest v1 Specification

- Developed a specification for Symbol Manifest v1 to provide a deterministic format for publishing debug symbols and source maps.
- Defined the manifest structure, including schema, entries, source maps, toolchain, and provenance.
- Outlined upload and verification processes, resolve APIs, runtime proxy, caching, and offline bundle generation.
- Included security considerations and related tasks for implementation.

chore: Add Ruby Analyzer with Git Sources

- Created a Gemfile and Gemfile.lock for Ruby analyzer with dependencies on git-gem, httparty, and path-gem.
- Implemented main application logic to utilize the defined gems and output their versions.
- Added expected JSON output for the Ruby analyzer to validate the integration of the new gems and their functionalities.
- Developed internal observation classes for Ruby packages, runtime edges, and capabilities, including serialization logic for observations.

test: Add tests for Ruby Analyzer

- Created test fixtures for Ruby analyzer, including Gemfile, Gemfile.lock, main application, and expected JSON output.
- Ensured that the tests validate the correct integration and functionality of the Ruby analyzer with the specified gems.

docs/implplan/SPRINT_202_cli_ii.md

@@ -16,9 +16,11 @@ CLI-EXPORT-37-001 | TODO | Provide scheduling (`stella export schedule`), retent
 CLI-FORENSICS-53-001 | TODO | Implement `stella forensic snapshot create --case` and `snapshot list/show` commands invoking evidence locker APIs, surfacing manifest digests, and storing local cache metadata. | DevEx/CLI Guild, Evidence Locker Guild (src/Cli/StellaOps.Cli)
 CLI-FORENSICS-54-001 | TODO | Provide `stella forensic verify <bundle>` command validating checksums, DSSE signatures, and timeline chain-of-custody. Support JSON/pretty output and exit codes for CI. Dependencies: CLI-FORENSICS-53-001. | DevEx/CLI Guild, Provenance Guild (src/Cli/StellaOps.Cli)
 CLI-FORENSICS-54-002 | TODO | Implement `stella forensic attest show <artifact>` listing attestation details (signer, timestamp, subjects) and verifying signatures. Dependencies: CLI-FORENSICS-54-001. | DevEx/CLI Guild, Provenance Guild (src/Cli/StellaOps.Cli)
+CLI-PROMO-70-001 | TODO | Add `stella promotion assemble` command that resolves image digests, hashes SBOM/VEX artifacts, fetches Rekor proofs from Attestor, and emits the `stella.ops/promotion@v1` JSON payload (see `docs/release/promotion-attestations.md`). | DevEx/CLI Guild, Provenance Guild (src/Cli/StellaOps.Cli)
+CLI-DETER-70-003 | TODO | Provide `stella detscore run` that executes the determinism harness locally (fixed clock, seeded RNG, canonical hashes) and writes `determinism.json`, supporting CI/non-zero threshold exit codes (`docs/modules/scanner/determinism-score.md`). | DevEx/CLI Guild, Scanner Guild (src/Cli/StellaOps.Cli)
 CLI-LNM-22-001 | TODO | Implement `stella advisory obs get/linkset show/export` commands with JSON/OSV output, pagination, and conflict display; ensure `ERR_AGG_*` mapping. | DevEx/CLI Guild (src/Cli/StellaOps.Cli)
 CLI-LNM-22-002 | TODO | Implement `stella vex obs get/linkset show` commands with product filters, status filters, and JSON output for CI usage. Dependencies: CLI-LNM-22-001. | DevEx/CLI Guild (src/Cli/StellaOps.Cli)
 CLI-NOTIFY-38-001 | BLOCKED (2025-10-29) | Implement `stella notify rules | DevEx/CLI Guild (src/Cli/StellaOps.Cli)
 CLI-NOTIFY-39-001 | BLOCKED (2025-10-29) | Add simulation (`stella notify simulate`) and digest commands with diff output and schedule triggering, including dry-run mode. Dependencies: CLI-NOTIFY-38-001. | DevEx/CLI Guild (src/Cli/StellaOps.Cli)
 CLI-NOTIFY-40-001 | TODO | Provide ack token redemption workflow, escalation management, localization previews, and channel health checks. Dependencies: CLI-NOTIFY-39-001. | DevEx/CLI Guild (src/Cli/StellaOps.Cli)
-CLI-OBS-50-001 | TODO | Ensure CLI HTTP client propagates `traceparent` headers for all commands, prints correlation IDs on failure, and records trace IDs in verbose logs (scrubbed). | DevEx/CLI Guild (src/Cli/StellaOps.Cli)
+CLI-OBS-50-001 | TODO | Ensure CLI HTTP client propagates `traceparent` headers for all commands, prints correlation IDs on failure, and records trace IDs in verbose logs (scrubbed). | DevEx/CLI Guild (src/Cli/StellaOps.Cli)