Add remote session loading

docs/operations.md

@@ -6,19 +6,21 @@ For field-level configuration, see [docs/config.md](./config.md). For full comma
 
 ## Normal workflow (S3-first path)
 
-1. Upload session `.flac` files to object storage under the configured session audio prefix.
-2. Run Narratio:
+1. Upload `session.yml` to the configured session prefix, or keep a local `session.yml` available.
+2. Upload session `.flac` files to object storage under the configured session audio prefix.
+3. Run Narratio:
 
 ```bash
 narratio run --session-id 2026-04-04
 ```
 
-3. Read success output:
+4. Read success output:
 - `narratio run: session <session_id>; executed=<n> skipped=<n>; manifest=<path>`
 - use `manifest=<path>` with `status` for inspection.
 
 Notes:
 - default config/campaign/session discovery applies unless `--config`, `--campaign`, and `--session` are passed.
+- when local `session.yml` discovery misses, `--session-id` loads remote `session.yml` from `{root_prefix}/campaigns/{campaign}/sessions/{session_id}/session.yml`.
 - S3 audio mode requires `session.inputs.audio_s3.prefix` and valid object-store access.
 
 ## Restore workflow