Implemented new campaign/session stable inputs and corresponding input source references

docs/config.md

@@ -44,7 +44,7 @@ using configured object storage.
 - Session files must be concrete; unresolved `{{ ... }}` placeholders fail load.
 - Pipeline defaults are applied before validation.
 - Campaign and session identities must agree.
-- Stable files (`speakers_file`, `autocorrect_file`, `glossary_file`) resolve from session overrides when provided, otherwise from campaign defaults.
+- Stable files (`speakers_file`, `autocorrect_file`, `glossary_file`, `players_file`, `party_file`) resolve from session overrides when provided, otherwise from campaign defaults.
 - Exactly one audio mode must be configured in session input:
   - local (`audio_dir` or `audio_files`), or
   - S3 (`audio_s3.prefix`).
@@ -69,6 +69,8 @@ inputs:
   speakers_file: ./speakers.yml
   autocorrect_file: ./autocorrect.yml
   glossary_file: ./glossary.yml
+  players_file: ./players.yml
+  party_file: ./party.yml
 ```
 
 `session.yml` (local audio)
@@ -229,7 +231,7 @@ For each artifact input `pipeline.scriptorium.artifacts.<name>.inputs.<input_nam
 
 | Field | Type | Required | Rule |
 | --- | --- | --- | --- |
-| `source` | string | Yes | built-in runtime source, `narratio.artifact.<name>`, or `narratio.previous_session.artifact.<name>` |
+| `source` | string | Yes | built-in runtime source, prepared input source, `narratio.artifact.<name>`, or `narratio.previous_session.artifact.<name>` |
 | `artifact` | string | No | optional passthrough adapter field |
 | `path` | string | No | optional passthrough adapter field |
 | `required` | bool | No | optional input requirement |
@@ -243,6 +245,8 @@ For each artifact input `pipeline.scriptorium.artifacts.<name>.inputs.<input_nam
 | `inputs.speakers_file` | string | Yes | stable input default |
 | `inputs.autocorrect_file` | string | Yes | stable input default |
 | `inputs.glossary_file` | string | Yes | stable input default |
+| `inputs.players_file` | string | Yes | stable input default |
+| `inputs.party_file` | string | Yes | stable input default |
 
 ### Session
 
@@ -256,6 +260,8 @@ For each artifact input `pipeline.scriptorium.artifacts.<name>.inputs.<input_nam
 | `inputs.speakers_file` | string | No | overrides campaign stable input |
 | `inputs.autocorrect_file` | string | No | overrides campaign stable input |
 | `inputs.glossary_file` | string | No | overrides campaign stable input |
+| `inputs.players_file` | string | No | overrides campaign stable input |
+| `inputs.party_file` | string | No | overrides campaign stable input |
 | `inputs.audio_dir` | string | Conditional | local audio mode |
 | `inputs.audio_files[]` | list[string] | Conditional | local audio mode |
 | `inputs.audio_s3.prefix` | string | Conditional | S3 audio mode |

docs/internal/stage-analyze.md

@@ -10,6 +10,7 @@ Execute selected configured Scriptorium artifacts in dependency order and materi
 
 Supported source families:
 - built-ins: `narratio.transcript.*`, `narratio.bounds.session`
+- prepared stable inputs: `narratio.input.players`, `narratio.input.party`, `narratio.input.glossary`
 - configured artifacts: `narratio.artifact.<key>`
 - previous-session cache: `narratio.previous_session.artifact.<key>`
 
@@ -23,12 +24,14 @@ Supported source families:
 - marks non-executable configured artifacts as reusable when output files already exist.
 - validates selected artifact dependency order (cycle-safe topo ordering).
 - resolves required/optional inputs per artifact source definition.
+- resolves prepared stable input sources from `inputs/*.yml` materialized by `prepare`.
 - resolves previous-session sources from local `previous/` cache only.
 - runs optional render-debug, then artifact execution.
 - validates non-empty output files and materializes canonical outputs.
 
 ## Failure Semantics
 - required missing configured/previous-session inputs fail.
+- missing required prepared stable input source includes prepare rerun guidance.
 - missing required previous-session source includes prepare rerun guidance.
 - missing required `narratio.transcript.final_markdown` or `narratio.transcript.final_trimmed_markdown` inputs includes render rerun guidance.
 - dependency cycles or unavailable required dependencies fail.

docs/internal/stage-prepare.md

@@ -5,7 +5,7 @@ Materialize canonical current-session inputs before processing stages.
 
 ## Inputs
 - resolved `campaign.yml`, `session.yml`, and pipeline config
-- stable input files (`speakers`, `autocorrect`, `glossary`)
+- stable input files (`speakers`, `autocorrect`, `glossary`, `players`, `party`)
 - audio source:
   - local `audio_dir`/`audio_files`, or
   - S3 `audio_s3.prefix`
@@ -18,6 +18,8 @@ Materialize canonical current-session inputs before processing stages.
 - `inputs/speakers.yml`
 - `inputs/autocorrect.yml`
 - `inputs/glossary.yml`
+- `inputs/players.yml`
+- `inputs/party.yml`
 - `audio/*.flac`
 - optional `previous/manifest.json`
 - optional `previous/artifacts/**`

docs/operations.md

@@ -36,6 +36,8 @@ narratio session init 2026-04-04 --remote --force
 
 If `campaign.yml` sets `session_template_file`, `session init` renders it. Template variables must resolve to concrete values.
 
+Campaigns must provide stable input files for speakers, autocorrect, glossary, players, and party. Session files may override those paths for one session. The `prepare` stage materializes them under `inputs/`; configured Scriptorium artifacts can reference prepared `players`, `party`, and `glossary` files with `narratio.input.players`, `narratio.input.party`, and `narratio.input.glossary`.
+
 ## Standard Session Workflow
 
 1. Select pipeline/campaign/session config.