chore: merge develop preserving documentation structure and console UX

Integrate develop at 523bade3 while retaining concise agent guidance, rustdoc-owned design rationale, and current console history/rewind behavior. Adapt incoming tests to public entry-ID rewind and synchronize OpenAPI/TypeScript artifacts.

Validation: default-member cargo test --all-features (4936 passed, 23 ignored), root cargo check, all-feature rustdoc with broken links denied, format/diff/name guards, OpenAPI and 11 TypeScript freshness checks. Web: 613 unit, 327 component, 7 Ticket browser and 3 Console browser tests; check/build passed. Merged-state Ticket visual review at 1440/768/390px in light/dark; no matching pre-merge image baseline. E2E/live-provider checks not run.

crates/agen/Cargo.toml

@@ -37,6 +37,7 @@ chrono = { version = "0.4", default-features = false, features = ["serde", "cloc
 agen-macros = { workspace = true }
 
 [dev-dependencies]
+tokio = { workspace = true, features = ["test-util"] }
 clap = { version = "4.5", features = ["derive", "env"] }
 tempfile = { workspace = true }
 dotenv = "0.15"