fix: Remove remote docling VLM component

[erichare]

This pull request removes the DoclingRemoteVLMComponent from the codebase, due to ongoing issues with running Torch within the Langflow framework.

Component removal:

• Deleted the entire implementation of DoclingRemoteVLMComponent, including its logic for provider selection, credential handling, dynamic model fetching, and VLM pipeline execution (src/lfx/src/lfx/components/docling/docling_remote_vlm.py).

Component loader updates:

• Removed all references to DoclingRemoteVLMComponent from the __init__.py file, including import statements, dynamic import mapping, and the __all__ export list (src/lfx/src/lfx/components/docling/__init__.py).

Summary by CodeRabbit

• Removed
  • Remote document conversion via cloud-hosted VLM services (Watsonx and OpenAI-compatible endpoints) is no longer available.

[coderabbitai]

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Walkthrough

Removed the DoclingRemoteVLMComponent from the public API by deleting its implementation file and removing its lazy import exports from the module's initialization. This component previously facilitated remote VLM processing via Watsonx and OpenAI-compatible API endpoints with PDF document handling capabilities.

Changes

Cohort / File(s)	Change Summary
Module exports src/lfx/src/lfx/components/docling/__init__.py	Removed DoclingRemoteVLMComponent from public API: deleted TYPE_CHECKING import, removed entry from _dynamic_imports mapping, and removed from __all__ list. Component will no longer be lazily imported or accessible via module.
Component implementation src/lfx/src/lfx/components/docling/docling_remote_vlm.py	Deleted entire component implementation file including class definition, metadata (display name, description, icon), supported file extensions, input/output configurations, model fetching logic, provider-specific VLM options builders (Watsonx and OpenAI-compatible), and file processing pipeline with DocumentConverter integration.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

• Verify no remaining imports or references to DoclingRemoteVLMComponent elsewhere in the codebase
• Confirm removal aligns with deprecation or feature discontinuation strategy
• Check for any downstream dependencies or user-facing breaking changes related to the component removal

Possibly related PRs

• feat: Add DoclingRemoteVLMComponent + docs #10311: Directly reverses the PR that added DoclingRemoteVLMComponent and its lazy import exports to the same files
• docs: hide docling remote VLM component from main #10490: Removes or hides documentation for the same component
• fix: Proper support for VLM in Docling #10094: Adds or adjusts Docling VLM support (mlx-vlm dependency and VLM handling)

Suggested labels

bug, lgtm

Suggested reviewers

• mendonk
• jordanrfrazier

Pre-merge checks and finishing touches

✅ Passed checks (7 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The pull request title 'fix: Remove remote docling VLM component' clearly and concisely summarizes the main change—removing the DoclingRemoteVLMComponent due to Torch compatibility issues.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Test Coverage For New Implementations	✅ Passed	No test files exist for DoclingRemoteVLMComponent; removing deprecated functionality due to Torch integration issues requires no test updates.
Test Quality And Coverage	✅ Passed	This PR removes existing code rather than implementing new functionality, making the Test Quality and Coverage check for new implementations inapplicable.
Test File Naming And Structure	✅ Passed	PR properly removes DoclingRemoteVLMComponent without leaving orphaned test files. No test files reference the deleted component, confirming proper test structure patterns.
Excessive Mock Usage Warning	✅ Passed	This PR removes the DoclingRemoteVLMComponent implementation. No test files are being modified or added, and no excessive mock usage patterns were found in any related tests.

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[github-actions]

Frontend Unit Test Coverage Report

Coverage Summary

Lines	Statements	Branches	Functions
	14.67% (3955/26947)	7.45% (1533/20552)	9% (532/5906)

Unit Test Results

Tests	Skipped	Failures	Errors	Time
1588	0 💤	0 ❌	0 🔥	19.125s ⏱️

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 31.40%. Comparing base (403b939) to head (d7cedfe).
⚠️ Report is 1 commits behind head on main.

❌ Your project status has failed because the head coverage (39.35%) is below the target coverage (60.00%). You can increase the head coverage or adjust the target coverage.

❗ There is a different number of reports uploaded between BASE (403b939) and HEAD (d7cedfe). Click for more details.

HEAD has 6 uploads less than BASE

Flag	BASE (403b939)	HEAD (d7cedfe)
frontend	2	1
backend	10	5

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10547      +/-   ##
==========================================
- Coverage   38.90%   31.40%   -7.50%     
==========================================
  Files        1477     1325     -152     
  Lines       85270    59995   -25275     
  Branches    10240     8983    -1257     
==========================================
- Hits        33175    18843   -14332     
+ Misses      51048    40245   -10803     
+ Partials     1047      907     -140     

Flag	Coverage Δ
backend	50.93% <ø> (-5.93%)	⬇️
frontend	13.57% <ø> (-0.78%)	⬇️
lfx	39.35% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.
see 372 files with indirect coverage changes

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[Adam-Aghili]

LGTM!