phranck f4141d0ecf Test: Strengthen 17 weak test assertions ...

Replace vague assertions with concrete, specific checks:

**Pattern 1: !buffer.isEmpty → Specific content checks**
- ViewTests.swift (1): Check bold ANSI code + content
- StatusBarTests.swift (4): Check item labels present
- ModifierTests.swift (1): Check border characters
- ButtonTests.swift (3): Check height + border characters
- ComponentViewTests.swift (4): Check titles + content
- ContainerViewTests.swift (1): Check height + content
- FrameBufferTests.swift (2): Check overlay composition

**Pattern 2: Weak contains() → Exact ANSI codes**
- ANSIRendererFullTests.swift (1): contains("1") → contains("\u{1B}[1m")

**Summary:**
- 17 tests strengthened across 8 files
- All tests now assert observable behavior
- No property readback, no empty checks
- 412 tests passing

Addresses to-dos.md line 34: "Weak Test Rewrites"

2026-02-01 22:00:22 +01:00

..

TUIkitTests

Test: Strengthen 17 weak test assertions

2026-02-01 22:00:22 +01:00