feat(tools): add run_shell, edit_file, write_file + read_file directory listing

Four standard-tier tool extensions (one tool per extension, zero ABI change):
- tool-read-file: read_file now lists directory contents (sorted, /-suffixed subdirs)
- tool-shell: run_shell (foreground, streamed, cancellable, cwd, timeout + output cap)
- tool-edit-file: edit_file (oldString/newString/replaceAll; errors on absent/non-unique)
- tool-write-file: write_file (explicit overwrite flag)
Registered in host-bin CORE_EXTENSIONS. Live boot clean (shell capability accepted).
686 vitest + 89 bun = 775 tests; tsc -b EXIT 0; biome clean.

1 files changed, 30 insertions, 0 deletions

diff --git a/bun.lock b/bun.lock
index 5911ffd..3cd4cc8 100644
--- a/bun.lock
+++ b/bun.lock
@@ -55,7 +55,10 @@
         "@dispatch/surface-loaded-extensions": "workspace:*",
         "@dispatch/surface-registry": "workspace:*",
         "@dispatch/throughput-store": "workspace:*",
+        "@dispatch/tool-edit-file": "workspace:*",
         "@dispatch/tool-read-file": "workspace:*",
+        "@dispatch/tool-shell": "workspace:*",
+        "@dispatch/tool-write-file": "workspace:*",
         "@dispatch/transport-http": "workspace:*",
         "@dispatch/transport-ws": "workspace:*",
       },
@@ -130,6 +133,13 @@
         "@dispatch/kernel": "workspace:*",
       },
     },
+    "packages/tool-edit-file": {
+      "name": "@dispatch/tool-edit-file",
+      "version": "0.0.0",
+      "dependencies": {
+        "@dispatch/kernel": "workspace:*",
+      },
+    },
     "packages/tool-read-file": {
       "name": "@dispatch/tool-read-file",
       "version": "0.0.0",
@@ -137,6 +147,20 @@
         "@dispatch/kernel": "workspace:*",
       },
     },
+    "packages/tool-shell": {
+      "name": "@dispatch/tool-shell",
+      "version": "0.0.0",
+      "dependencies": {
+        "@dispatch/kernel": "workspace:*",
+      },
+    },
+    "packages/tool-write-file": {
+      "name": "@dispatch/tool-write-file",
+      "version": "0.0.0",
+      "dependencies": {
+        "@dispatch/kernel": "workspace:*",
+      },
+    },
     "packages/trace-replay": {
       "name": "@dispatch/trace-replay",
       "version": "0.0.0",
@@ -236,8 +260,14 @@
 
     "@dispatch/throughput-store": ["@dispatch/throughput-store@workspace:packages/throughput-store"],
 
+    "@dispatch/tool-edit-file": ["@dispatch/tool-edit-file@workspace:packages/tool-edit-file"],
+
     "@dispatch/tool-read-file": ["@dispatch/tool-read-file@workspace:packages/tool-read-file"],
 
+    "@dispatch/tool-shell": ["@dispatch/tool-shell@workspace:packages/tool-shell"],
+
+    "@dispatch/tool-write-file": ["@dispatch/tool-write-file@workspace:packages/tool-write-file"],
+
     "@dispatch/trace-replay": ["@dispatch/trace-replay@workspace:packages/trace-replay"],
 
     "@dispatch/trace-store": ["@dispatch/trace-store@workspace:packages/trace-store"],