Make command line references pipeline scoped

docs/cli.md

@@ -55,8 +55,8 @@ pipeline ID and **--input** are required.
 | **--session-id id** | Override the generated prompt session identifier with a non-empty value for LLM-backed module calls. |
 | **--reasoning-effort value** | Replace the selected PromptKit profile's reasoning effort for every LLM-backed call in this run. The value must be non-empty and the flag may be specified only once. |
 | **--clear-reasoning-effort** | Clear reasoning effort inherited from the selected PromptKit profile for every LLM-backed call in this run. |
-| **--reference selector=path** | Add or replace a file reference binding. Repeatable. |
-| **--without-reference selector** | Remove a configured optional reference binding. Repeatable. |
+| **--reference selector=path** | Add or replace external file reference bindings at pipeline, lane, chunk, or binding scope. Repeatable. |
+| **--without-reference selector** | Remove matching configured external reference bindings. Repeatable. |
 
 **--chunk_cache** accepts only **auto**, **bypass**, or **refresh**.
 **--debug-dir**, **--output-dir**, **--session-id**, and
@@ -81,23 +81,49 @@ guidance.
 
 ### Reference selectors
 
-Use **--reference** only for a reference slot declared by the selected
-configured target. The accepted selector forms are:
+Use **--reference** only for reference slots declared by the selected
+configured targets. Qualification narrows the scope of an override:
 
 | Form | Target |
 | --- | --- |
-| slot=path | The unique selected target that declares slot. |
+| slot=path | Every selected target that declares slot. |
 | chunk.slot=path | The chunker. |
-| merge.slot=path | The unique selected merger that declares slot. |
-| lane.slot=path | The unique extractor, merger, or normalizer in lane that declares slot. |
+| lane.slot=path | Every extractor, merger, or normalizer in lane that declares slot. |
 | lane.extract.slot=path | The extractor in lane. |
 | lane.merge.slot=path | The merger in lane. |
 | lane.normalize.slot=path | The normalizer in lane. |
 
-**--without-reference** uses the same selector forms without =path. Slot
-names, requiredness, and configured bindings are part of the
+Pipeline- and lane-scoped selectors are expected to match multiple targets and
+fail if they match none. A stage-specific selector fails when its lane is not
+selected or its target does not declare the slot. There is no stage-wide
+`merge.slot` shorthand; name the lane when targeting a merger.
+
+CLI bindings override configured external paths. For overlapping CLI
+selectors, a binding-specific or chunk selector overrides a lane selector, and
+a lane selector overrides a pipeline selector. The last occurrence wins at
+equal scope. Binding and unbinding the same concrete target at equal scope is
+an error; a narrower bind or unbind may create an intentional exception to a
+broader action.
+
+**--without-reference** uses the same selector forms without `=path` and
+removes external bindings only. Neither flag replaces or removes a generated
+artifact handoff; an external/generated collision is a resolution error.
+Required slots are checked after all effective changes. CLI reference paths
+are resolved relative to the process working directory, so subprocess and
+service callers should use absolute paths. Slot names, accepted media types,
+size limits, requiredness, and configured generated bindings are part of the
 [configuration contract](config.md).
 
+For example, one shared campaign reference can reach every compatible target,
+with an optional lane-specific exception:
+
+~~~
+notarius run dnd-session \
+  --input /data/transcript.json \
+  --reference party=/data/references/party.txt \
+  --reference npc-registry.party=/data/references/npc-party-context.txt
+~~~
+
 ### Run output
 
 Without **--json**, standard output contains the completed pipeline ID, counts