fix(wizard): always prompt for Ollama endpoint and pair with correct model

[twaugh]

When switching to Ollama in logsqueak init, the wizard now:

1. Always prompts for endpoint confirmation (even if auto-test succeeds)

   • Tests default endpoint and shows connection status
   • Gives users chance to review/change before proceeding
   • Reuses test result if user keeps default and it succeeded

2. Pairs endpoint and model from the same provider

   • Tracks which provider (ollama_remote/ollama_local/active) the default endpoint came from
   • Uses model from SAME provider when user accepts default endpoint
   • Clears model default if user changes endpoint (no invalid pairing)

Before this fix:

• Switching from custom → Ollama would skip endpoint prompt if connection test succeeded
• Model default could come from wrong provider (e.g., endpoint from ollama_remote but model from ollama_local)

After this fix:

• User ALWAYS sees endpoint prompt with correct default
• Endpoint and model stay paired from their source provider
• Changing endpoint clears model default (prevents stale pairing)

Changes:

• wizard.py:224-303: Track provider key, always prompt, pair model
• test_config_wizard.py:139-183: Mock endpoint prompt, verify pairing

Fixes issue where remembered Ollama endpoints were auto-accepted without user confirmation, and models were not properly paired with their endpoints.

Assisted-by: Claude Code

[codecov-commenter]

Codecov Report

❌ Patch coverage is 72.91667% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.06%. Comparing base (c0dff0a) to head (ced08dc).

Files with missing lines	Patch %	Lines
src/logsqueak/wizard/wizard.py	72.91%	13 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #32      +/-   ##
==========================================
- Coverage   85.39%   85.06%   -0.34%     
==========================================
  Files          48       48              
  Lines        5082     5083       +1     
==========================================
- Hits         4340     4324      -16     
- Misses        742      759      +17     

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