test(security): cover TVDB API key configuration paths

[JonahMMay]

Problem

PR #8 merged but Go coverage fell to 94.4% (floor 95%) after removing the hardcoded TVDB key.

Approach

Add unit tests for SetAPIKey (including token clear on rotation), missing-key failures, provider wiring, and Configure api_key handling. Coverage now 96.6%.

Testing

go test -coverprofile=coverage.out ./...
./scripts/check-coverage.sh coverage.out

  

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: bebf7a22-abd8-46b7-a850-e08ee0bf4f80

📥 Commits

Reviewing files that changed from the base of the PR and between dddb3bf and cdf562d.

📒 Files selected for processing (3)

• main_test.go
• provider/client_test.go
• provider/provider_test.go

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch cursor/tvdb-key-coverage-83ad

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