diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 539f0d573..448ff67d3 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -218,7 +218,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -229,7 +229,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -1602,7 +1602,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -1663,7 +1663,7 @@ dependencies = [
 [[package]]
 name = "doctor"
 version = "0.1.0"
-source = "git+https://github.com/block/builderbot?rev=73ff9a0521dcc784c9514911a655187e5dd3b6ca#73ff9a0521dcc784c9514911a655187e5dd3b6ca"
+source = "git+https://github.com/block/builderbot?rev=4f6db3dbe80c86251c1394bdaf7bbef96a2d0408#4f6db3dbe80c86251c1394bdaf7bbef96a2d0408"
 dependencies = [
  "dirs",
  "futures",
@@ -1867,7 +1867,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -2784,7 +2784,7 @@ dependencies = [
  "tokio",
  "tower-service",
  "tracing",
- "windows-registry 0.6.1",
+ "windows-registry",
 ]
 
 [[package]]
@@ -3642,7 +3642,7 @@ dependencies = [
  "png 0.18.1",
  "serde",
  "thiserror 2.0.20",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -4318,7 +4318,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7d8fae84b431384b68627d0f9b3b1245fcf9f46f6c0e3dc902e9dce64edd1967"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.45.0",
 ]
 
 [[package]]
@@ -4907,7 +4907,7 @@ dependencies = [
  "once_cell",
  "socket2",
  "tracing",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -5366,7 +5366,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -5425,7 +5425,7 @@ dependencies = [
  "security-framework 3.7.0",
  "security-framework-sys",
  "webpki-root-certs",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -5984,7 +5984,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3d1e2c7f27f8d4cb10542a02c49005dbd6e93095799d6f3be745fae9f8fedd4"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -6685,7 +6685,7 @@ dependencies = [
  "thiserror 2.0.20",
  "tracing",
  "url",
- "windows-registry 0.5.3",
+ "windows-registry",
  "windows-result 0.3.4",
 ]
 
@@ -7006,10 +7006,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
 dependencies = [
  "fastrand",
- "getrandom 0.4.3",
+ "getrandom 0.3.4",
  "once_cell",
  "rustix",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -7028,7 +7028,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "230a1b821ccbd75b185820a1f1ff7b14d21da1e442e22c0863ea5f08771a8874"
 dependencies = [
  "rustix",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -7489,7 +7489,7 @@ dependencies = [
  "png 0.18.1",
  "serde",
  "thiserror 2.0.20",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -7548,7 +7548,7 @@ checksum = "f2f6fb2847f6742cd76af783a2a2c49e9375d0a111c7bef6f71cd9e738c72d6e"
 dependencies = [
  "memoffset",
  "tempfile",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -8195,7 +8195,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -8428,17 +8428,6 @@ dependencies = [
  "windows-strings 0.4.2",
 ]
 
-[[package]]
-name = "windows-registry"
-version = "0.6.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02752bf7fbdcce7f2a27a742f798510f3e5ad88dbe84871e5168e2120c3d5720"
-dependencies = [
- "windows-link 0.2.1",
- "windows-result 0.4.1",
- "windows-strings 0.5.1",
-]
-
 [[package]]
 name = "windows-result"
 version = "0.1.2"
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 08505f3e4..a9e19c90c 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -39,7 +39,7 @@ berd-voice = { path = "crates/berd-voice", features = ["static"] }
 chrono = { version = "0.4", features = ["serde"] }
 dirs = "6.0.0"
 dunce = "1"
-doctor = { git = "https://github.com/block/builderbot", rev = "73ff9a0521dcc784c9514911a655187e5dd3b6ca" }
+doctor = { git = "https://github.com/block/builderbot", rev = "4f6db3dbe80c86251c1394bdaf7bbef96a2d0408" }
 etcetera = "0.11.0"
 flate2 = "1"
 tempfile = "3"
diff --git a/src/features/onboarding/model/catalog.test.ts b/src/features/onboarding/model/catalog.test.ts
index 20a75e75c..3ea5c392b 100644
--- a/src/features/onboarding/model/catalog.test.ts
+++ b/src/features/onboarding/model/catalog.test.ts
@@ -37,6 +37,7 @@ describe("onboarding catalog", () => {
       "copilot-acp",
       "amp-acp",
       "cursor-agent",
+      "pi-acp",
     ]);
   });
 });
diff --git a/src/features/onboarding/model/catalog.ts b/src/features/onboarding/model/catalog.ts
index 4089b02af..16faee51f 100644
--- a/src/features/onboarding/model/catalog.ts
+++ b/src/features/onboarding/model/catalog.ts
@@ -102,6 +102,7 @@ export const CURATED_HARNESS_IDS = [
   "copilot-acp",
   "amp-acp",
   "cursor-agent",
+  "pi-acp",
 ] as const;
 
 export type CuratedHarnessId = (typeof CURATED_HARNESS_IDS)[number];
diff --git a/src/features/onboarding/ui/HarnessStep.tsx b/src/features/onboarding/ui/HarnessStep.tsx
index fc306512d..9f92ac658 100644
--- a/src/features/onboarding/ui/HarnessStep.tsx
+++ b/src/features/onboarding/ui/HarnessStep.tsx
@@ -14,6 +14,7 @@ const PROVIDER_ICON_SIZES: Record<CuratedHarnessId, string> = {
   "copilot-acp": "size-[100px]",
   "amp-acp": "size-[92px]",
   "cursor-agent": "size-[90px]",
+  "pi-acp": "size-[92px]",
 };
 
 interface HarnessStepProps {
diff --git a/src/features/providers/curatedProviders.ts b/src/features/providers/curatedProviders.ts
index edc480f39..bf296a183 100644
--- a/src/features/providers/curatedProviders.ts
+++ b/src/features/providers/curatedProviders.ts
@@ -89,7 +89,7 @@ export const CURATED_PROVIDER_CATALOG: ProviderCatalogEntry[] = [
     binaryName: "pi-acp",
     group: "default",
     aliases: ["pi-acp", "pi"],
-    supportsInstall: false,
+    supportsInstall: true,
     supportsAuth: false,
     supportsAuthStatus: false,
   },