fix(clippy): fix all clippy warnings in hive-ag3nt, hive-forge, hive-matrix-mcp, hive-sh4re

Fixes all clippy -D warnings errors in the crates iris owns:

hive-sh4re:
- doc_lazy_continuation: add blank /// separator in priv_proto.rs
- doc_markdown: backtick PRIVATE_NETWORK=0 / PRIVATE_NETWORK=1

hive-matrix-mcp:
- map_unwrap_or: map().unwrap_or_else() -> map_or_else() in paths.rs
- collapsible_if: if-let chains in wake.rs
- doc_markdown: backtick M_UNKNOWN_TOKEN in main.rs
- cast_possible_truncation: usize/u64 -> u32::try_from in handlers.rs
- map_unwrap_or: map_or_else() in handlers.rs
- manual_let_else: match Ok(r) => r, Err => return -> let Ok in handlers.rs
- unused_async: remove async from list_invites; update socket.rs call site

hive-forge:
- doc_markdown: backtick REQUEST_CHANGES / APPROVED / COMMENT in pr_reviews.rs
- unnecessary_wraps: list_reviews_text returns () not Result<()>
- doc_markdown: backtick start_page / last_page in comments.rs
- cast_possible_truncation: PAGE_SIZE u64 -> usize; remove as usize casts

hive-ag3nt:
- collapsible_if: if-let chains in events.rs and mcp.rs
- single_match_else: match -> if let in events.rs and mcp.rs
- items_after_statements: hoist STATUS_MAX_CHARS const in mcp.rs
- map_unwrap_or: map_or_else() in mcp.rs and mcp_loose_ends.rs
- cast_possible_truncation: usize -> u32::try_from in mcp.rs
- doc_markdown: backtick snake_case in mcp.rs, needs_update/deployed_sha
  in web_ui.rs, HISTORY_CAPACITY in web_ui.rs
- identical_match_arms: combine manage_root_agent | query_agent_state
- redundant_closure: |s| s.to_string() -> ToString::to_string in web_ui.rs
- duration_suboptimal_units: from_secs(3600) -> from_hours(1) in turn.rs

Remaining failures in hive-c0re (39), hive-priv (8), hive-bash-mcp (11)
are owned by damocles.

hive-matrix-mcp/src/socket.rs

@@ -79,7 +79,7 @@ async fn dispatch(req: DaemonRequest, client: &Client) -> DaemonResponse {
             handlers::mark_read(client, &room, &event_id).await
         }
         DaemonRequest::ListRooms => handlers::list_rooms(client).await,
-        DaemonRequest::ListInvites => handlers::list_invites(client).await,
+        DaemonRequest::ListInvites => handlers::list_invites(client),
         DaemonRequest::JoinRoom { room } => handlers::join_room(client, &room).await,
         DaemonRequest::InviteUser { room, user_id } => {
             handlers::invite_user(client, &room, &user_id).await