fix: resolve Python dotted imports in dependency analyzer

[DevanshuNEU]

Bug

Python imports like starlette.exceptions were being treated as external dependencies, resulting in 0 resolved dependencies even when files existed.

Logs showed:

[DEBUG] Sample file imports file=starlette/_exception_handler.py | imports=['starlette.exceptions', 'starlette.websockets', 'starlette.requests']
[INFO] Import resolution complete resolved=0 | external=603

Root Cause

Early return in _resolve_import_to_file checked for / in import path but not .:

if '/' not in import_path:
    return None  # ← starlette.exceptions has no '/' so returns here

Fix

Only treat single-word imports (os, json, sys) as external. Allow dotted imports to reach resolution logic that converts starlette.exceptions → starlette/exceptions.py.

Test Results

Import	Before	After
starlette.exceptions	None ❌	starlette/exceptions.py ✅
os	None ✅	None ✅

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Project	Deployment	Review	Updated (UTC)
opencodeintel	Ready	Preview, Comment	Jan 13, 2026 0:30am