Implemented operations helper commands for validation, locking, and status

docs/roadmap/operations.md

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+# Roadmap: Operator Helper Commands
+
+## Status
+
+Implemented.
+
+The operator helper command set is no longer conceptual. Current behavior is documented in:
+
+- `docs/cli.md`
+- `docs/operations.md`
+- `docs/config.md`
+- `docs/internal/artifacts.md`
+- `docs/internal/stage-archive.md`
+
+## Implemented Commands
+
+- `narratio session validate`
+- `narratio status --manifest <path>`
+- `narratio status --session-id <id>`
+- `narratio session init --output <path>`
+- `narratio session init --remote`
+- `narratio artifacts list`
+- `narratio artifacts list --remote`
+- `narratio locks`
+- `narratio lock <source>`
+- `narratio unlock <source>`
+
+## Implemented Decisions
+
+- Helper output is text-only. No JSON schema exists yet.
+- `status` remains a top-level command.
+- `session validate`, `session init`, and `artifacts list` are nested helper commands.
+- `lock`, `unlock`, and `locks` are top-level commands.
+- Remote session initialization requires explicit `--remote`.
+- Local session initialization requires `--output`.
+- Remote artifact availability is opt-in with `artifacts list --remote`.
+- Mutable locks are source-based and stored at `{session_prefix}/locks.yml`.
+- The remote lock store uses strict YAML with top-level `locks`.
+- Static `pipeline.archive.locks` and remote locks are merged; static locks win on duplicate sources.
+- `unlock` removes only remote locks.
+- Ordinary execution `--force` does not override locks.
+- Remote lock writes use existence checks and `--force` for updates; there is no compare-and-swap protection.
+
+## Remaining Future Enhancements
+
+These are intentionally not implemented:
+
+- `--json` output for helper commands.
+- Optimistic concurrency or ETag compare-and-swap for remote lock mutations.
+- Rich remote artifact availability across historical run-local objects.
+- Session-lock acquisition for remote mutation helpers.
+- Broader campaign helper commands such as `campaign validate` or `campaign publish`.
+