fix(build): resolve Zig module conflicts - capsule binary now compiles
- Changed file-level imports to module imports throughout codebase
- Added missing module imports to l1_mod (soulkey, time, trust_graph, qvl)
- Added l0_mod.addImport("time", time_mod) for l0-transport
- Fixed API calls in examples to match current encryptPayload/decryptPayload signatures
- Fixed namespace references in capsule code (l0_transport.lwf → l0_transport)
- Removed redundant soulkey import from capsule_mod
- Capsule binary: 29MB debug build, verified working
Build Status: ✅ PASS (all artifacts compile successfully)
Tests: zig build completes successfully
8f86a32eee