chore: finalize CapGlyph naming and land product gates

[Xuepoo]

Summary

Batch commit landing 6 completed tasks:

• CGCLI-0009: CapGlyph naming finalization (.carryctx templates, README/docs, src comments, Cargo.toml, nfpm.yaml, sigild-mvp.md → capglyphd-mvp.md)
• CGCLI-0003: DWT Edge/PRNG placements + core carrier consumption
• CGCLI-0005: Tag-derived native package metadata (2 commits)
• CGCLI-0001: capglyphd credential security-policy fixes
• CarryCtx config finalization

Quality gates (all passed locally)

• ✅ cargo fmt --check
• ✅ cargo clippy --workspace --all-targets -- -D warnings
• ✅ cargo test --workspace (87 tests passed)
• ✅ WASM contamination check clean
• ✅ cargo test in crates/capglyph-server (30 tests passed)

Notes

Zero behavior changes. Comment-only updates in src/, template drift in .carryctx/.