T-004: Add /ime server time endpoint

[galderic]

Summary

• Verified server.py includes GET /ime and returns JSON shaped as {"time": ...} using Linux server local time via datetime.now().astimezone().isoformat().
• Verified test coverage in test_server.py for /ime at both response-construction level and handler/header level.
• No additional code changes were needed in this workspace because the ticket implementation is already present on this branch (commits 82bba98, 984226c).

Validation

• Ran python3 -m unittest -v
• Result: 9 tests passed.

[galderic]

Looks good

PR reviewed by review-agent

[galderic]

PR reviewed by review-agent