Spread AbsolutePathBuf (#17792)

Mechanical change to promote absolute paths through code.

codex-rs/app-server-protocol/schema/json/v2/ItemGuardianApprovalReviewCompletedNotification.json

@@ -1,6 +1,10 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
   "definitions": {
+    "AbsolutePathBuf": {
+      "description": "A path that is guaranteed to be absolute and normalized (though it is not guaranteed to be canonicalized or exist on the filesystem).\n\nIMPORTANT: When deserializing an `AbsolutePathBuf`, a base path must be set using [AbsolutePathBufGuard::new]. If no base path is set, the deserialization will fail unless the path being deserialized is already absolute.",
+      "type": "string"
+    },
     "AutoReviewDecisionSource": {
       "description": "[UNSTABLE] Source that produced a terminal guardian approval review decision.",
       "enum": [
@@ -54,7 +58,7 @@
               "type": "string"
             },
             "cwd": {
-              "type": "string"
+              "$ref": "#/definitions/AbsolutePathBuf"
             },
             "source": {
               "$ref": "#/definitions/GuardianCommandSource"
@@ -85,7 +89,7 @@
               "type": "array"
             },
             "cwd": {
-              "type": "string"
+              "$ref": "#/definitions/AbsolutePathBuf"
             },
             "program": {
               "type": "string"
@@ -114,11 +118,11 @@
         {
           "properties": {
             "cwd": {
-              "type": "string"
+              "$ref": "#/definitions/AbsolutePathBuf"
             },
             "files": {
               "items": {
-                "type": "string"
+                "$ref": "#/definitions/AbsolutePathBuf"
               },
               "type": "array"
             },