feat: implement all P1/P2/P3/P4 improvements from issue backlog

P1 correctness:
- filter test files by default (--include-tests to opt in)
- per-module diagrams show cross-module dependency arrows
- qualified type names (Module::TypeName) fix false edges from duplicate names

P2 output richness:
- method parameter types and return types in class diagrams (Rust + Python)
- Python pyproject.toml project analyzer (--level project for monorepos)

P3 unique value:
- boundary rules in archlens.toml ([rules] allow/deny, --strict enforcement)

P4 nice to have:
- dependency weight labels on module arrows (--no-weights to disable)
- --watch mode with 500ms debounce
- D2 renderer adapter (--format d2)
- interactive self-contained HTML viewer (--format html)
- git-aware incremental analysis (--since <ref>)

crates/presentation/Cargo.toml

@@ -19,7 +19,11 @@ archlens-file-writer.workspace = true
 archlens-stdout-writer.workspace = true
 archlens-toml-config.workspace = true
 archlens-cargo-workspace.workspace = true
+archlens-python-project.workspace = true
+archlens-d2.workspace = true
+archlens-html.workspace = true
 anyhow.workspace = true
+notify.workspace = true
 clap.workspace = true
 tracing.workspace = true
 tracing-subscriber.workspace = true