[sanskarIN]

User-facing issue

When the cursor already sits after indentation on an otherwise blank code line, a local model can emit the same indentation at the beginning of its continuation. LineLoom was not recognizing whitespace-only prefix echoes, so accepting the suggestion doubled indentation (notably in Python).

Fix

• Remove at most the exact spaces/tabs already present on the current editor line when the generated insertion starts with that same indentation.
• Preserve further model-generated indentation for deeper nested code and never strip a generated line's indentation if the cursor line already contains code or the generation starts with an actual newline.
• Add unit regression tests for Python blocks, tabs/mixed whitespace, nested indentation, non-blank cursor lines, and final accepted document text.

Scope and validation

• Pure completion postprocessing: no new network request, source upload, settings change or model download.
• Existing privacy and cancellation checks remain unchanged.
• No trained first-party weights or real Ollama editor-quality measurement implied; focused source+synthetic tests and CI are required before merge.
• No new VSIX/marketplace release or publisher migration requested.