fix: RevertBanner UI shows no changes after successful file revert (#8121)

* core: fix revert diff showing incorrect changes after file restore

When reverting a session, the diff was computed after files were already
reverted to their pre-change state, producing an empty or wrong diff.
By computing the diff before restoring files, the revert summary now
correctly reflects what was actually undone for the user.

* core: reduce revert diff size in DB to save storage

Full file contents were being stored in the session summary diffs,
causing unnecessary database bloat. The webview RevertBanner only
needs file path, line counts, and status — not the full diff content.

* chore(cli): add kilocode_change markers to revert diff changes

---------

Co-authored-by: Marius <marius@kilocode.ai>

packages/opencode/src/session/index.ts

@@ -130,7 +130,18 @@ export namespace Session {
           additions: z.number(),
           deletions: z.number(),
           files: z.number(),
-          diffs: Snapshot.FileDiff.array().optional(),
+          // kilocode_change start - lightweight diff summary (no file contents)
+          diffs: z
+            .array(
+              z.object({
+                file: z.string(),
+                additions: z.number(),
+                deletions: z.number(),
+                status: z.enum(["added", "deleted", "modified"]).optional(),
+              }),
+            )
+            .optional(),
+          // kilocode_change end
         })
         .optional(),
       share: z
@@ -483,6 +494,7 @@ export namespace Session {
             summary_additions: input.summary?.additions,
             summary_deletions: input.summary?.deletions,
             summary_files: input.summary?.files,
+            summary_diffs: input.summary?.diffs ?? null, // kilocode_change
             time_updated: Date.now(),
           })
           .where(eq(SessionTable.id, input.sessionID))

packages/opencode/src/session/revert.ts

@@ -57,15 +57,27 @@ export namespace SessionRevert {
     if (revert) {
       const session = await Session.get(input.sessionID)
       revert.snapshot = session.revert?.snapshot ?? (await Snapshot.track())
-      await Snapshot.revert(patches)
-      if (revert.snapshot) revert.diff = await Snapshot.diff(revert.snapshot)
+
+      // kilocode_change start - compute diffs BEFORE reverting files so the diff
+      // reflects changes being undone (files on disk still have AI modifications)
       const rangeMessages = all.filter((msg) => msg.info.id >= revert!.messageID)
       const diffs = await SessionSummary.computeDiff({ messages: rangeMessages })
+      await Snapshot.revert(patches)
+      if (revert.snapshot) revert.diff = await Snapshot.diff(revert.snapshot)
+      // kilocode_change end
       await Storage.write(["session_diff", input.sessionID], diffs)
       Bus.publish(Session.Event.Diff, {
         sessionID: input.sessionID,
         diff: diffs,
       })
+      // kilocode_change start - strip full file contents before persisting to DB
+      const summaryDiffs = diffs.map((d) => ({
+        file: d.file,
+        additions: d.additions,
+        deletions: d.deletions,
+        status: d.status,
+      }))
+      // kilocode_change end
       return Session.setRevert({
         sessionID: input.sessionID,
         revert,
@@ -73,6 +85,7 @@ export namespace SessionRevert {
           additions: diffs.reduce((sum, x) => sum + x.additions, 0),
           deletions: diffs.reduce((sum, x) => sum + x.deletions, 0),
           files: diffs.length,
+          diffs: summaryDiffs, // kilocode_change
         },
       })
     }

packages/opencode/src/session/session.sql.ts

@@ -25,7 +25,11 @@ export const SessionTable = sqliteTable(
     summary_additions: integer(),
     summary_deletions: integer(),
     summary_files: integer(),
-    summary_diffs: text({ mode: "json" }).$type<Snapshot.FileDiff[]>(),
+    // kilocode_change start - lightweight diff type (no file contents)
+    summary_diffs: text({ mode: "json" }).$type<
+      { file: string; additions: number; deletions: number; status?: "added" | "deleted" | "modified" }[]
+    >(),
+    // kilocode_change end
     revert: text({ mode: "json" }).$type<{ messageID: string; partID?: string; snapshot?: string; diff?: string }>(),
     permission: text({ mode: "json" }).$type<PermissionNext.Ruleset>(),
     ...Timestamps,

packages/sdk/js/src/v2/gen/types.gen.ts

@@ -833,7 +833,12 @@ export type Session = {
     additions: number
     deletions: number
     files: number
-    diffs?: Array<FileDiff>
+    diffs?: Array<{
+      file: string
+      additions: number
+      deletions: number
+      status?: "added" | "deleted" | "modified"
+    }>
   }
   share?: {
     url: string
@@ -1749,7 +1754,12 @@ export type GlobalSession = {
     additions: number
     deletions: number
     files: number
-    diffs?: Array<FileDiff>
+    diffs?: Array<{
+      file: string
+      additions: number
+      deletions: number
+      status?: "added" | "deleted" | "modified"
+    }>
   }
   share?: {
     url: string

packages/sdk/openapi.json

@@ -5805,6 +5805,9 @@
                     },
                     "id": {
                       "type": "string"
+                    },
+                    "skipped": {
+                      "type": "boolean"
                     }
                   },
                   "required": [
@@ -5927,6 +5930,9 @@
                     },
                     "id": {
                       "type": "string"
+                    },
+                    "skipped": {
+                      "type": "boolean"
                     }
                   },
                   "required": [
@@ -6106,6 +6112,9 @@
                     },
                     "id": {
                       "type": "string"
+                    },
+                    "skipped": {
+                      "type": "boolean"
                     }
                   },
                   "required": [
@@ -6368,6 +6377,9 @@
                     },
                     "id": {
                       "type": "string"
+                    },
+                    "skipped": {
+                      "type": "boolean"
                     }
                   },
                   "required": [
@@ -12487,7 +12499,31 @@
               "diffs": {
                 "type": "array",
                 "items": {
-                  "$ref": "#/components/schemas/FileDiff"
+                  "type": "object",
+                  "properties": {
+                    "file": {
+                      "type": "string"
+                    },
+                    "additions": {
+                      "type": "number"
+                    },
+                    "deletions": {
+                      "type": "number"
+                    },
+                    "status": {
+                      "type": "string",
+                      "enum": [
+                        "added",
+                        "deleted",
+                        "modified"
+                      ]
+                    }
+                  },
+                  "required": [
+                    "file",
+                    "additions",
+                    "deletions"
+                  ]
                 }
               }
             },
@@ -13975,6 +14011,10 @@
             "description": "@deprecated Use 'share' field instead. Share newly created sessions automatically",
             "type": "boolean"
           },
+          "remote_control": {
+            "description": "Enable remote control of sessions via Kilo Cloud. Equivalent to running /remote on startup.",
+            "type": "boolean"
+          },
           "autoupdate": {
             "description": "Automatically update to the latest version. Set to true to auto-update, false to disable, or 'notify' to show update notifications",
             "anyOf": [
@@ -15061,7 +15101,31 @@
               "diffs": {
                 "type": "array",
                 "items": {
-                  "$ref": "#/components/schemas/FileDiff"
+                  "type": "object",
+                  "properties": {
+                    "file": {
+                      "type": "string"
+                    },
+                    "additions": {
+                      "type": "number"
+                    },
+                    "deletions": {
+                      "type": "number"
+                    },
+                    "status": {
+                      "type": "string",
+                      "enum": [
+                        "added",
+                        "deleted",
+                        "modified"
+                      ]
+                    }
+                  },
+                  "required": [
+                    "file",
+                    "additions",
+                    "deletions"
+                  ]
                 }
               }
             },