refactor(#2464): rename hive-ag3nt crate to hive-agent, collapse lib into main

hive-ag3nt/Cargo.toml

@@ -1,41 +0,0 @@
-[package]
-name = "hive-ag3nt"
-edition.workspace = true
-version.workspace = true
-
-[lints]
-workspace = true
-
-[dependencies]
-anyhow.workspace = true
-axum.workspace = true
-reqwest.workspace = true
-hyper.workspace = true
-hyper-util.workspace = true
-http-body-util.workspace = true
-forgejo-api.workspace = true
-url.workspace = true
-time.workspace = true
-futures-util = "0.3"
-clap.workspace = true
-hive-claude.workspace = true
-hive-sh4re.workspace = true
-rmcp.workspace = true
-rusqlite.workspace = true
-schemars.workspace = true
-serde.workspace = true
-serde_json.workspace = true
-tokio.workspace = true
-tokio-stream.workspace = true
-tower-http.workspace = true
-tracing.workspace = true
-tracing-subscriber.workspace = true
-
-[dev-dependencies]
-tempfile = "3"
-
-# Three sibling harness binaries for all agents (auto-discovered from
-# `src/bin/`): `hive-agent` (serve loop), `hive-agent-mcp` (MCP
-# server), `hive-agent-wake` (wake CLI). Privilege boundary is
-# enforced server-side at the socket (tool groups / manager surface).
-# See `docs/turn-loop.md::Harness binary shape`.