fix: use --model instead of -m for cursor-agent model flag

[cheolwanpark]

Problem:
Cursor Agent was streaming 0 messages despite appearing successful:

🔧 [Cursor] Using model: gpt-5
[INFO] [CLI] 🔍 Final success determination: cli_type=CLIType.CURSOR, result_success=None, has_error=False
[INFO] [CLI] Using has_error logic: not False = True
[SUCCESS] [CLI] Streaming completed successfully. Total messages: 0
[INFO] [ACT] Result received: success=True, cli=cursor

Root Cause:
cursor-agent.py:310 was using -m flag, but cursor-agent CLI specification appears to have changed and now only recognizes --model for specifying models. The unknown -m flag caused cursor-agent to fail silently with no output.

Fix:
Changed cmd.extend(["-m", cli_model]) to cmd.extend(["--model", cli_model])

Why This Works:
cursor-agent --help confirms: --model <model> (not -m) Using the correct flag ensures cursor-agent properly receives the model parameter and generates output events.

[mojosolo]

Excellent fix! ✅

This correctly addresses the cursor-agent CLI specification change. The flag was causing silent failures (0 messages streamed), and your diagnosis is spot-on.

Validation:

• Confirmed cursor-agent uses --model flag (not -m)
• One-line change, minimal risk
• Fixes critical functionality issue

Impact: This restores cursor-agent functionality for model selection. Ready to merge.

[mojosolo]

Excellent fix! This correctly addresses the cursor-agent CLI specification change. The -m flag was causing silent failures (0 messages streamed), and your diagnosis is spot-on.

Validation:

• Confirmed cursor-agent uses --model flag (not -m)
• One-line change, minimal risk
• Fixes critical functionality issue

Impact: This restores cursor-agent functionality for model selection. Ready to merge.

[mojosolo]

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Current Status:

• ✅ Code reviewed and approved
• ⏳ Waiting for workflow approval
• 📋 Once checks pass, ready to merge

What this PR fixes:

Restores cursor-agent model selection by changing -m → --model flag. Critical fix for 0-message streaming issue.

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