Add the tool port, registry, dispatch and the fake tools

Implemented-By: OpenCode session (model recorded in docs/implementer-log.md)

docs/implementer-log.md

@@ -32,6 +32,7 @@ reviewer adds findings under "Reviews" once per milestone.
 | M2a/15-http-streaming | 2026-09-18 | done | 1 | pass | none | Fixed `read_chunked` so `Body::read` in the Chunked phase returns as soon as it has copied at least one byte of chunk data, even when the caller's buffer is not full and the chunk's trailing CRLF has not arrived; the CRLF is consumed at the start of the next call. It reads from the socket only when it has no data to give (a chunk-size line, a pending CRLF, or the trailers). The old `Data` arm looped back to read more from the socket whenever the buffer was not full and the chunk was not done, so a body streamed in 300 ms pieces arrived in one burst. All 16 http tests pass (the new `streamed_data_is_delivered_as_it_arrives` and `the_result_does_not_depend_on_how_the_bytes_arrive`), all loopd tests pass, `make gate` prints `gate: ok`. `cargo fmt --all` re-sorted a stray unused `use std::sync::mpsc;` left uncommitted in crates/inferproxy/src/lib.rs by a prior session; restored that file to HEAD so the commit stays scoped to crates/loopd. | Ornith-1.5-35B-A3B |
 | M2b/01-proto-channel-types | 2026-09-18 | done | 1 | pass | none | Added `Usage` struct and a `Usage` variant (between ToolResult and CacheLoss) in log.rs, and `Turn`, `TurnEvent`, `TurnDone` plus six `ErrorCode` variants (SessionFull..Inference) and three `Message` variants (after Error) in wire.rs; re-exported Usage, Turn, TurnEvent, TurnDone from lib.rs. All four new types carry `deny_unknown_fields`; field order matches the byte-exact fixtures (attempt/after_ms/error, name/class/truncated). 55 proto tests pass (turn_wire 5, strict 5, wire 9, ids 12, frame 13, grant 4, hash 4, records 3) and `make gate` prints `gate: ok`; the old fixtures stay byte-identical. One duplicate block of the three wire types left by an interrupted edit had to be removed mid-task. | Ornith-1.5-35B-A3B |
 | M2b/02-loopd-config | 2026-09-18 | done | 2 | fail | none | Added Paths/Channel/Loop/Baseline structs to config.rs with `#[serde(deny_unknown_fields, default)]` and Debug/Clone/PartialEq/Eq/Deserialize (Default derived for Channel, hand-written for the other three: home is $BOXMAKER_HOME else /var/lib/boxmaker, loop is 8/true/16384, baseline system is system.md); Config gained the four `#[serde(default)]` fields and `channel_socket()` fills the default `<home>/run/loop/loop.sock` when the socket is empty. `load` joins `baseline.system` to the config file's directory via `parent.join` (which replaces an already-absolute path); `parse` leaves it. 9 config tests pass, `deny_unknown_fields` count is 10. Two clippy fixes on the first (failing) gate run: the nested if in `load` collapsed by relying on Path::join replacing absolute paths instead of a 1.98 let-chain, and `Path::is_empty` (stable 1.98) replaced with `as_os_str().is_empty()`. | ? |
+| M2b/03-loopd-tools | 2026-09-18 | done | 1 | pass | none | Added `pub mod tools;` to lib.rs and `serde::Serialize`/`serde::Deserialize`/`deny_unknown_fields` to ToolSchema; wrote crates/loopd/src/tools.rs with ToolPort, Entry, Registry (m2b/config), core_schemas/get/find, FIND_TOOL/CALL_TOOL constants, clock_schema/echo_schema, Dispatch with dispatch (find_tool/call_tool/local dispatch rows), cap_result via floor_char_boundary, and FakeTools recording calls and answering clock/echo/denying others with `unwrap_or_else(|p| p.into_inner())` on Mutex::lock. 7 tools tests pass, `make gate` prints `gate: ok`, no `unwrap()` in tools.rs. | ? |
 
 
 ## Reviews