S180: Deep debt — async I/O fix, 5 large file refactors, capability-first string evolution

- Fix blocking std::fs::read_dir in async platform detectors (tokio::fs)
- Smart-refactor cross_gate.rs, infant_discovery/capabilities.rs,
  crypto_lock/validation.rs, runtime/mod.rs, configurator/core.rs
- Evolve primal-name strings in 8 production files to capability-first
  (Songbird→coordination, BearDog→security/crypto, NestGate→storage,
  Squirrel→AI/routing)
- Update test assertions for evolved error messages
- 21,853 tests, 0 failures, Clippy clean

Made-with: Cursor

Author: westgate

CHANGELOG.md

@@ -5,7 +5,32 @@ All notable changes to ToadStool will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased] - April 4, 2026 (Sessions 43-177)
+## [Unreleased] - April 4, 2026 (Sessions 43-180)
+
+### Session S180 (Apr 4, 2026) — Deep Debt Evolution: Async I/O, Refactoring, String Evolution
+
+#### Async I/O Fix (1 file)
+- Replaced blocking `std::fs::read_dir` with `tokio::fs::read_dir` in 2 async platform detectors
+  (`detect_neuromorphic_platforms`, `detect_edge_iot_platforms` in `distributed/universal/detection`)
+
+#### Large File Smart Refactoring (5 files)
+- `server/cross_gate.rs` (660L) → `cross_gate/{mod,types,dispatcher,router,tests}.rs`
+- `common/infant_discovery/capabilities.rs` (658L) → `capabilities/{mod,discovered,discovery_traits,substrate,endpoint,standard_capabilities,tests}.rs`
+- `distributed/crypto_lock/validation.rs` (652L) → `validation/{mod,types,validators,tests}.rs`
+- `toadstool/runtime/mod.rs` (651L) → `mod.rs` (189L) + `tests.rs` (463L)
+- `cli/configurator/core.rs` (643L) → `core/{mod,defaults,apply_validate,tests}.rs`
+
+#### Production Log/Error String Evolution (8 files)
+- `"Songbird"` → `"coordination service"` in songbird_integration (transport, connection, capability_discovery)
+- `"BearDog"` → `"security/crypto service"` in beardog_integration discovery + integration/beardog
+- `"NestGate"` → `"storage service"` in integration/nestgate client
+- `"Squirrel"` → `"AI/routing service"` in biomeos agent_backend + CLI executor
+- `DistributedError` display: "Coordination service registration failed"
+
+#### Quality
+- 21,853 tests (0 failures) — net +229 from new module tests
+- `cargo clippy --workspace --all-targets -- -D warnings` clean
+- Remaining `SONGBIRD_SOCKET` env var refs in tests updated to `BIOMEOS_COORDINATION_SOCKET`
 
 ### Session S177 (Apr 4, 2026) — Capability-Based Evolution + Large File Refactoring
 

DEBT.md

@@ -1,6 +1,6 @@
 # Active Technical Debt Register
 
-**Date**: April 4, 2026 — S177
+**Date**: April 4, 2026 — S180
 **Philosophy**: Math is universal, precision is silicon. Workarounds are
 short-term solutions that increase debt. We aim to solve deep debt over
 iterations, evolving toward vendor-agnostic, capability-based solutions.
@@ -26,6 +26,27 @@ MOS 6502 / Z80 emulator trait impls return `EmbeddedEmulatorPlaceholder` errors.
 Evolve when cycle-accurate CPU cores are implemented.
 Files: `embedded/emulator_impls.rs`, `embedded/emulators.rs`.
 
+## S180 Resolved Debt (Deep Debt Evolution — Async I/O, Refactoring, String Evolution)
+
+### Async I/O Fix
+- `distributed/universal/detection/mod.rs`: Replaced blocking `std::fs::read_dir` with
+  `tokio::fs::read_dir` in 2 async detector functions (`detect_neuromorphic_platforms`,
+  `detect_edge_iot_platforms`). Graceful fallback on missing `/dev`.
+
+### Large File Smart Refactoring (5 files)
+- `server/cross_gate.rs` (660L) → `cross_gate/{mod,types,dispatcher,router,tests}.rs`
+- `common/infant_discovery/capabilities.rs` (658L) → `capabilities/{mod,discovered,discovery_traits,substrate,endpoint,standard_capabilities,tests}.rs`
+- `distributed/crypto_lock/validation.rs` (652L) → `validation/{mod,types,validators,tests}.rs`
+- `toadstool/runtime/mod.rs` (651L) → `mod.rs` (189L) + `tests.rs` (463L)
+- `cli/configurator/core.rs` (643L) → `core/{mod,defaults,apply_validate,tests}.rs`
+
+### Production String Evolution (8 files)
+- Evolved primal-name string literals in log/error messages to capability-first:
+  `"Songbird"` → `"coordination service"`, `"BearDog"` → `"security/crypto service"`,
+  `"NestGate"` → `"storage service"`, `"Squirrel"` → `"AI/routing service"`
+- Updated `DistributedError::SongbirdRegistration` display text to `"Coordination service registration failed"`
+- All corresponding test assertions updated
+
 ## S177 Resolved Debt (Capability-Based Evolution + Refactoring)
 
 ### D-ENVCONFIG-PRIMAL-NAMES — RESOLVED S177

NEXT_STEPS.md

@@ -1,8 +1,8 @@
 # ToadStool/BarraCuda -- Next Steps
 
-**Updated**: April 4, 2026 -- S177 Capability-Based Evolution
-**Status**: Production-grade | Rust edition **2024** (MSRV 1.85) | **AGPL-3.0-only** | **All quality gates green** | 21,624 tests (0 failures) | **~67 JSON-RPC methods** | Zero C FFI deps (ecoBin v3.0) | Zero production unwraps | IPC-first | **43/43 crates with `unsafe_code` lint policy** (23 forbid + 20 deny) | **~59 unsafe blocks** (48 in containment zones, 11 in consumer code; consumer −80%)
-**Latest**: S177 — Capability-based evolution: env_config fields renamed from primal names to capability names (`songbird_port` → `coordination_port`, etc.) with serde aliases. Removed deprecated socket path functions (`get_beardog_socket_path` etc.), IPC `connect_to_primal`/`resolve_primal`. Smart-refactored 5 more files >650L. All quality gates green.
+**Updated**: April 4, 2026 -- S180 Deep Debt Evolution
+**Status**: Production-grade | Rust edition **2024** (MSRV 1.85) | **AGPL-3.0-only** | **All quality gates green** | 21,853 tests (0 failures) | **~67 JSON-RPC methods** | Zero C FFI deps (ecoBin v3.0) | Zero production unwraps | IPC-first | **43/43 crates with `unsafe_code` lint policy** (23 forbid + 20 deny) | **~59 unsafe blocks** (48 in containment zones, 11 in consumer code; consumer −80%)
+**Latest**: S180 — Fixed blocking `std::fs::read_dir` in async detectors. Smart-refactored 5 more files >640L (cross_gate, infant_discovery/capabilities, crypto_lock/validation, runtime/mod, configurator/core). Evolved 8 files of primal-name string literals in production log/error messages to capability-first naming. All quality gates green.
 
 ---
 

README.md

@@ -1,6 +1,6 @@
 # ToadStool
 
-**Sovereign Compute Hardware** | Pure Rust | ecoBin | March 2026
+**Sovereign Compute Hardware** | Pure Rust | ecoBin | April 2026
 
 ---
 
@@ -42,7 +42,7 @@ Nest    = Tower  + NestGate           <- storage
 | `cargo fmt --all -- --check` | 0 diffs |
 | `cargo clippy --workspace --all-targets -- -D warnings` | 0 warnings |
 | `cargo doc --workspace --no-deps` | 0 warnings |
-| `cargo test --workspace` | **21,624 tests, 0 failures** (S177), 220 ignored (hardware-gated) |
+| `cargo test --workspace` | **21,853 tests, 0 failures** (S180), 220 ignored (hardware-gated) |
 | Doctests | All passing (common, core, server, cli, testing, display) |
 | Standalone clone test | Pull to any machine, `cargo test` works (GPU-optional, CPU fallback, device-lost resilient) |
 | `unsafe` blocks | **~59 actual** (48 in `hw-safe`/`v4l2::ioctl` containment zones, 11 in consumer/driver code); SAFETY-documented; **23 crates forbid, 20 deny** `unsafe_code` |
@@ -244,7 +244,7 @@ toadStool/
 | Clippy pedantic warnings | 0 (workspace-wide `clippy::pedantic` clean; `#[expect]` evolution S131+) |
 | Doc warnings | 0 |
 | Build warnings | 0 |
-| Workspace tests | **21,624** (S177), 0 failures |
+| Workspace tests | **21,853** (S180), 0 failures |
 | Full workspace test time | ~8m (8 threads, GPU crates have NVK resilience wrappers) |
 | `unsafe` blocks | **~59 actual** (48 in containment zones, 11 in consumer code); SAFETY-documented; **23 crates forbid, 20 deny** `unsafe_code` |
 | Production panics/unwraps | 0 blind `unwrap()`; infallible `expect()` only |
@@ -265,7 +265,7 @@ toadStool/
 **We are still evolving.** barraCuda (separate primal) owns all math and shaders. ToadStool focuses on hardware discovery, capability probing, and workload orchestration. All 5 spring handoffs absorbed.
 
 ### Active / Next
-- **Test coverage** -- pushing toward 90% target; 21,624 tests (S177); ~80-85% lib-only line (185K lines instrumented); remaining gap: hardware-dependent paths, specialty runtimes
+- **Test coverage** -- pushing toward 90% target; 21,853 tests (S180); ~80-85% lib-only line (185K lines instrumented); remaining gap: hardware-dependent paths, specialty runtimes
 - **DF64 / ComputeDispatch** -- transferred to barraCuda team (S93); toadStool serves hardware capabilities
 - **Sovereign compiler Phase 4+** -- register pressure estimation, loop software pipelining (barraCuda)
 
@@ -305,7 +305,7 @@ See [CHANGELOG.md](CHANGELOG.md) for full session-by-session detail.
 
 | ID | Description | Status |
 |----|-------------|--------|
-| D-COV | Test coverage → 90% | Active -- 21,624 tests (S177); ~80-85% lib-only line (185K instrumented); remaining gap: hardware paths |
+| D-COV | Test coverage → 90% | Active -- 21,853 tests (S180); ~80-85% lib-only line (185K instrumented); remaining gap: hardware paths |
 | D-S20-003 | ~~neuralSpring `evolved/` migration~~ | **RESOLVED** -- neuralSpring V89 completed; `evolved/` removed |
 | D-S18-002 | ~~cubecl transitive `dirs-sys`~~ | **RESOLVED** -- cubecl removed; dirs-sys only via wasmtime-cache (feature-gated) |
 
@@ -349,7 +349,7 @@ See [DEBT.md](DEBT.md) for full register and evolution paths.
 
 ---
 
-**Last Updated**: April 4, 2026 — S177. **21,624** workspace tests, 0 failures. ~80-85% lib-only line coverage (target 90%). **~67 JSON-RPC methods** (`identity.get`, `health.liveness`). AGPL-3.0-only. Zero C FFI deps (ecoBin v3.0). **~59 unsafe blocks** (48 in hw-safe/ioctl containment zones, 11 in consumer code). **43 crates** with `unsafe_code` lint policy. IPC-first JSON-RPC (Unix sockets). Capability symlinks (`compute.sock`). Neural API naming (`capability.register`/`resolve`/`find`). Rust 1.85+ (edition 2024, MSRV). **S177**: Capability-based evolution — env_config fields evolved from primal names (`songbird_port`) to capability names (`coordination_port`) with serde aliases; deprecated socket/IPC functions removed; 5 more large files smart-refactored. **Capability-based discovery compliant** per `CAPABILITY_BASED_DISCOVERY_STANDARD.md` v1.2.
+**Last Updated**: April 4, 2026 — S180. **21,853** workspace tests, 0 failures. ~80-85% lib-only line coverage (target 90%). **~67 JSON-RPC methods** (`identity.get`, `health.liveness`). AGPL-3.0-only. Zero C FFI deps (ecoBin v3.0). **~59 unsafe blocks** (48 in hw-safe/ioctl containment zones, 11 in consumer code). **43 crates** with `unsafe_code` lint policy. IPC-first JSON-RPC (Unix sockets). Capability symlinks (`compute.sock`). Neural API naming (`capability.register`/`resolve`/`find`). Rust 1.85+ (edition 2024, MSRV). **S180**: Fixed blocking async I/O in platform detectors; smart-refactored 5 more files >640L; evolved primal-name strings in production logs/errors to capability-first. **Capability-based discovery compliant** per `CAPABILITY_BASED_DISCOVERY_STANDARD.md` v1.2.
 
 ---
 

crates/cli/src/executor/workload/runtime.rs

@@ -55,7 +55,7 @@ pub(super) async fn register_runtime_engines(orchestrator: &RuntimeOrchestrator)
 
     // Python runtime removed — pyo3 FFI violates ecoBin v3.0.
     // Python workloads route to Squirrel via IPC.
-    debug!("   ℹ️  Python runtime: delegate to Squirrel via IPC");
+    debug!("   ℹ️  Python runtime: delegate to AI/routing service via IPC");
 
     // WASM runtime - Optional (has zstd C dependency)
     #[cfg(feature = "wasm")]