[zyssyz123]

Important

1. Contribution guidelines reviewed.
2. Associated issue: Snippet-inserted nodes get hyphenated IDs that the variable template regex cannot parse, so {{#nodeId.var#}} is sent to the LLM unsubstituted #43830.
3. This is the Dify-side companion to the Graphon runtime fix; it does not close the issue independently.

Summary

Refs #43830.

Recognize existing hyphenated node IDs in workflow-aware Prompt parsing, skipped-branch reference warnings, and RAG datasource parameter/input discovery. These paths currently ignore references such as {{#input-check.text#}} even though the frontend accepts the node ID. Only the node-ID character class is extended; IDs are not renamed and the remaining grammar is unchanged.

The Graphon runtime parser fix is langgenius/graphon#340. This PR deliberately leaves the pinned Graphon 0.7.0 dependency unchanged: normal rollout needs a compatible Graphon release/backport followed by a dependency update. It should not trigger an unrelated upgrade to Graphon 0.8.0. The workflow generator's existing ID-generation policy is unchanged.

Validation:

• New cases failed before the changes: 8 failed / 8 passing controls.
• Four complete affected test modules: 164 passed.
• Ruff formatting/lint, target-file type checks, and git diff --check passed.
• Verified together with the Graphon runtime edits on dev using the existing deployed 0.7.0 dependency. LLMNode.run() passed the resolved red and blue inputs to a local capture model adapter, without external model calls.

Screenshots

Backend change; representative captured USER prompt:

Before	After
Please process: {{#input-check.validated_input#}}	Please process: red

Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've verified the change and added or updated tests where meaningful regression risk justifies coverage.
• I've updated the documentation accordingly.
• I ran make lint && make type-check (backend) and vp staged (frontend) to appease the lint gods

No frontend changes or documentation update required. Targeted backend lint/type checks are listed above; the full repository-wide lint/type commands were not run.

From Codex

[github-actions]

Pyrefly Type Coverage

Metric	Base	PR	Delta
Type coverage	74.19%	74.19%	+0.00%
Strict coverage	73.85%	73.85%	+0.00%
Typed symbols	60,163	60,173	+10
Untyped symbols	21,030	21,029	-1
Modules	3746	3746	0

[github-actions]

Pyrefly Diff

base → PR

--- /tmp/pyrefly_base.txt	2026-10-14 02:30:05.174143202 +0000
+++ /tmp/pyrefly_pr.txt	2026-10-14 02:29:54.406079422 +0000
@@ -5801,13 +5801,13 @@
 ERROR Argument `dict[str, list[dict[str, dict[str, str | dict[str, str] | dict[str, int | str]]]]]` is not assignable to parameter `graph` with type `dict[str, object] | None` in function `_make_workflow` [bad-argument-type]
    --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_service.py:623:67
 ERROR Argument `() -> tuple[SimpleNamespace, Generator[NodeRunFailedEvent, Unknown]]` is not assignable to parameter `getter` with type `() -> tuple[Node[Unknown], Generator[GraphNodeEventBase | IterationFrameRequest | LoopFrameRequest]]` in function `services.rag_pipeline.rag_pipeline.RagPipelineService._handle_node_run_result` [bad-argument-type]
-    --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_service.py:1462:16
+    --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_service.py:1472:16
 ERROR Argument `() -> tuple[SimpleNamespace, Generator[object, Unknown]]` is not assignable to parameter `getter` with type `() -> tuple[Node[Unknown], Generator[GraphNodeEventBase | IterationFrameRequest | LoopFrameRequest]]` in function `services.rag_pipeline.rag_pipeline.RagPipelineService._handle_node_run_result` [bad-argument-type]
-    --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_service.py:1866:20
+    --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_service.py:1877:20
 ERROR Argument `() -> tuple[SimpleNamespace, Iterator[NodeRunFailedEvent]]` is not assignable to parameter `getter` with type `() -> tuple[Node[Unknown], Generator[GraphNodeEventBase | IterationFrameRequest | LoopFrameRequest]]` in function `services.rag_pipeline.rag_pipeline.RagPipelineService._handle_node_run_result` [bad-argument-type]
-    --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_service.py:1886:16
+    --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_service.py:1897:16
 ERROR Argument `() -> tuple[SimpleNamespace, Iterator[NodeRunFailedEvent]]` is not assignable to parameter `getter` with type `() -> tuple[Node[Unknown], Generator[GraphNodeEventBase | IterationFrameRequest | LoopFrameRequest]]` in function `services.rag_pipeline.rag_pipeline.RagPipelineService._handle_node_run_result` [bad-argument-type]
-    --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_service.py:1906:16
+    --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_service.py:1917:16
 ERROR No matching overload found for function `typing.MutableMapping.update` called with arguments: (dict[str, object]) [no-matching-overload]
   --> tests/unit_tests/services/rag_pipeline/test_rag_pipeline_transform_service.py:29:18
 ERROR No matching overload found for function `typing.MutableMapping.update` called with arguments: (dict[str, object]) [no-matching-overload]

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.92%. Comparing base (e2ae06a) to head (1a209a6).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #44036      +/-   ##
==========================================
- Coverage   88.92%   88.92%   -0.01%     
==========================================
  Files        5327     5327              
  Lines      328950   328950              
  Branches    65847    65847              
==========================================
- Hits       292532   292530       -2     
- Misses      31230    31231       +1     
- Partials     5188     5189       +1     

Flag	Coverage Δ
api	88.47% <100.00%> (+<0.01%)	⬆️

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