fix: resolve KeyError when YAML-mode resources lack 'id' field

[raman325]

Summary

Fixes a KeyError: 'id' exception during HA startup when users have YAML-mode Lovelace resources with the keymaster resource already manually added.

Proposed change

YAML-mode Lovelace resources don't include an 'id' field — they only have 'url' and 'type'. When users followed the warning message and manually added the keymaster resource to their YAML config, the generator expression in async_register_strategy_resource crashed on data['id'] before the StopIteration handler (which correctly handles YAML mode) could run.

Restructured the function to check resource existence by URL first using any() (works for both YAML and storage collection types), then branch on the result:

• Already registered → log and return (no id access needed)
• Not registered + YAML mode → warn user to add manually
• Not registered + storage mode → create the resource automatically

Type of change

• Bugfix (non-breaking change which fixes an issue)

Additional information

• This PR fixes or closes issue: fixes ISSUE: KeyError: 'id' exception during HA start #560
• This PR is related to issue:

[Copilot]

Pull request overview

This PR fixes a KeyError: 'id' crash that occurred during Home Assistant startup when users had YAML-mode Lovelace resources with the keymaster resource already manually added. The fix restructures the resource registration logic to check for existing resources by URL before attempting to access the 'id' field, which doesn't exist in YAML-mode resources.

Changes:

• Replaced try-except StopIteration pattern with any() check for resource existence
• Reordered logic to handle "already registered" case before checking YAML vs storage mode
• Added test coverage for the YAML-mode scenario where the resource already exists

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
custom_components/keymaster/resources.py	Restructured async_register_strategy_resource to check resource existence by URL first, avoiding KeyError when accessing non-existent 'id' field in YAML-mode resources
tests/test_resources.py	Added test case to verify no error occurs when the resource already exists in YAML mode

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.57%. Comparing base (a9a30ef) to head (0f62573).
⚠️ Report is 18 commits behind head on beta.
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Additional details and impacted files

@@            Coverage Diff             @@
##             beta     #561      +/-   ##
==========================================
+ Coverage   80.86%   84.57%   +3.71%     
==========================================
  Files          19       25       +6     
  Lines        2341     2730     +389     
==========================================
+ Hits         1893     2309     +416     
+ Misses        448      421      -27     

Flag	Coverage Δ
python	84.57% <100.00%> (?)

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[firstof9]

Looks good to me.