feat: add Morph API key to setup wizard

[udhaya10]

Summary

Add Morph API key prompt to the setup wizard's prompt_api_keys() function.

Currently the wizard prompts for Perplexity, Nia, and Braintrust but skips Morph, which is needed by 3 skills.

Changes

• prompt_api_keys() — add Morph API key (fast code editing/search) prompt
• generate_env_file() — write MORPH_API_KEY to .env

Skills unlocked

Skill	Impact when Morph missing
morph-apply	Broken — cannot use fast AI file editing (10,500 tokens/sec)
morph-search	Broken — cannot use WarpGrep fast search (20x faster)
implement_task	Degraded — falls back to native Edit tool

API key from: https://www.morphllm.com

Test plan

• Run wizard → Step 4 now shows Morph prompt
• Enter key → verify MORPH_API_KEY=xxx appears in .env
• Skip (Enter) → verify no MORPH_API_KEY line in .env

Ref #141

Summary by CodeRabbit

• New Features
  • Added Morph API key configuration to the setup wizard, enabling users to provide and store their Morph API key during the initial setup process.

[greptile-apps]

PR author is not in the allowed authors list.

[coderabbitai]

📝 Walkthrough

Walkthrough

The setup wizard script now collects an additional "morph" API key during the API keys prompt and writes the corresponding MORPH_API_KEY to the environment file when present.

Changes

Cohort / File(s)	Summary
API Key Collection in Setup Wizard opc/scripts/setup/wizard.py	Added "morph" API key collection to prompt_api_keys function and MORPH_API_KEY environment variable generation to generate_env_file function.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Possibly related issues

• Continuous-Claude-v3#141: Addresses the same objective of collecting the "morph" API key and writing MORPH_API_KEY to the environment configuration.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely summarizes the main change: adding Morph API key support to the setup wizard, which aligns perfectly with the changeset.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Merge Conflict Detection	✅ Passed	✅ No merge conflicts detected when merging into main

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[coderabbitai]

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)

opc/scripts/setup/wizard.py (1)

623-623: ⚠️ Potential issue | 🟡 Minor

Missing "morph" key in the default api_keys dict when the user skips API key configuration.

When the user declines to configure API keys, the fallback dict omits "morph", making its shape inconsistent with prompt_api_keys(). Not a runtime bug (.get("morph") returns None), but worth keeping consistent.

Proposed fix

-        api_keys = {"perplexity": "", "nia": "", "braintrust": ""}
+        api_keys = {"perplexity": "", "nia": "", "braintrust": "", "morph": ""}