#81 feat: add command-level security configuration

[RAprogramm]

Summary

• Add security = "..." option to #[command(...)] for per-command security override
• Support "none" to make specific commands public
• Priority: command override > entity public list > entity default

Usage

#[entity(api(
    tag = "Users",
    security = "bearer",      // Default for all
    public = [Register]       // These are public
))]
#[command(AdminDelete, requires_id, security = "admin")]  // Custom security
#[command(PublicList, security = "none")]                 // No auth
pub struct User { ... }

Test plan

• 3 unit tests for security parsing
• clippy clean
• All 98 tests pass

Closes #81

[codecov]

Codecov Report

❌ Patch coverage is 72.72727% with 15 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...ates/entity-derive-impl/src/entity/api/handlers.rs	11.76%	15 Missing ⚠️

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