Documentation update for the restore subcommand

docs/config.md

@@ -13,6 +13,7 @@ These commands load and validate both files before running:
 - `narratio plan`
 - `narratio resume`
 - `narratio run-stage`
+- `narratio restore`
 
 Behavior:
 
@@ -23,28 +24,28 @@ Behavior:
 
 ## 2. Config file discovery
 
-Pipeline config lookup for `run`, `plan`, `resume`, and `run-stage`:
+Pipeline config lookup for `run`, `plan`, `resume`, `run-stage`, and `restore`:
 
-- If `--config <path>` is provided, that path is used.
-- If omitted, Narratio searches in order:
+- if `--config <path>` is provided, that path is used.
+- if omitted, Narratio searches in order:
   1. `/usr/local/etc/narratio/pipeline.yml`
   2. `/etc/narratio/pipeline.yml`
-- First existing file wins.
+- first existing file wins.
 
 ## 3. Session file discovery and templating
 
-Session config lookup for `run`, `plan`, `resume`, and `run-stage`:
+Session config lookup for `run`, `plan`, `resume`, `run-stage`, and `restore`:
 
-- If `--session <path>` is provided, that path is used.
-- If omitted, Narratio searches in order:
+- if `--session <path>` is provided, that path is used.
+- if omitted, Narratio searches in order:
   1. `./session.yml`
   2. `/usr/local/etc/narratio/session.yml`
   3. `/etc/narratio/session.yml`
-- First existing file wins.
+- first existing file wins.
 
 Template behavior:
 
-- Supported placeholders:
+- supported placeholders:
   - `{{session_id}}`
   - `{{ session_id }}`
 - `--session-id <value>` supplies the placeholder value.
@@ -133,6 +134,7 @@ Operational notes:
 - archive promotion is explicit and source-based via `archive.promote_artifacts`.
 - `source` is required; `dest` is optional and derived when omitted.
 - Narratio does not auto-promote all generated analyze artifacts.
+- `restore` reads the same config/session inputs and restore scope is bounded by committed archive current state.
 
 ## 7. Full pipeline reference
 
@@ -267,6 +269,11 @@ Archive promotion destination rules:
   - configured sources derive from `pipeline.scriptorium.artifacts.<name>.output_path`;
   - derivation failure is a config validation error.
 
+Restore-related implications:
+
+- restore remote identity requires archive S3 identity to resolve (`pipeline.storage.s3.bucket` and session prefix derivation inputs).
+- restore scope considers only committed current state and durable paths (`manifest.json`, `transcripts/**`, `artifacts/**`, optional `audio/**`).
+
 ## 8. Full session reference
 
 | Path | Type | Required | Default |