diff --git a/.githooks/commit-msg b/.githooks/commit-msg
index 2577592..49bdcf0 100755
--- a/.githooks/commit-msg
+++ b/.githooks/commit-msg
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# F∆I Platform — commit-msg hook.
+# Ch∆In — commit-msg hook.
 # Validates the commit message: Conventional Commits subject, DCO
 # sign-off, no Claude co-author trailer, no banned phrases.
 exec "$(git rev-parse --show-toplevel)/tools/security/check-staged.sh" message "$1"
diff --git a/.githooks/pre-commit b/.githooks/pre-commit
index d8022a4..861b19a 100755
--- a/.githooks/pre-commit
+++ b/.githooks/pre-commit
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# F∆I Platform — pre-commit hook.
+# Ch∆In — pre-commit hook.
 # Activated via `tools/install-hooks.sh` (sets core.hooksPath=.githooks).
 # Scans staged files for secrets, banned phrases, forbidden filenames.
 # Same script runs in Forgejo CI — see .forgejo/workflows/ci.yml.
diff --git a/README.md b/README.md
index a3b5bd9..575d921 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # fai_client_sdk (Dart)
 
-gRPC client SDK for the F∆I Platform hub. Used by F∆I Studio
+gRPC client SDK for the Ch∆In hub. Used by F∆I Studio
 (Tier-2 generic GUI) and any Tier-3 Dart/Flutter domain app
 that wants to talk to a running `fai serve`.
 
diff --git a/lib/fai_client_sdk.dart b/lib/fai_client_sdk.dart
index 15e7ed2..1316394 100644
--- a/lib/fai_client_sdk.dart
+++ b/lib/fai_client_sdk.dart
@@ -1,4 +1,4 @@
-/// gRPC client for the F∆I Platform hub.
+/// gRPC client for the Ch∆In hub.
 ///
 /// Provides a typed Dart wrapper around the hub's gRPC services
 /// (Hub, HubAdmin) defined in `fai/platform`'s `proto/fai/v1/`
diff --git a/pubspec.yaml b/pubspec.yaml
index 65a926d..b0112dd 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: fai_client_sdk
-description: gRPC client SDK for the F∆I Platform hub. Used by F∆I Studio and Tier-3 domain apps.
+description: gRPC client SDK for the Ch∆In hub. Used by F∆I Studio and Tier-3 domain apps.
 version: 0.18.0
 publish_to: 'none'
 repository: https://git.flemming.ai/fai/client-sdk-dart
diff --git a/tools/install-hooks.sh b/tools/install-hooks.sh
index d5299a0..fbf5efa 100755
--- a/tools/install-hooks.sh
+++ b/tools/install-hooks.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# F∆I Platform — one-time hook activation for this clone.
+# Ch∆In — one-time hook activation for this clone.
 # Points git at the versioned `.githooks/` directory so pre-commit and
 # commit-msg checks run on every commit (including amends and rebases).
 #
diff --git a/tools/security/check-staged.sh b/tools/security/check-staged.sh
index 2a90a42..e4cc46d 100755
--- a/tools/security/check-staged.sh
+++ b/tools/security/check-staged.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# F∆I Platform — staged-content security check.
+# Ch∆In — staged-content security check.
 # Runs from .githooks/pre-commit, .githooks/commit-msg, and Forgejo CI.
 #
 # Modes:
diff --git a/tools/security/test-check-staged.sh b/tools/security/test-check-staged.sh
index 80cba27..68292e9 100755
--- a/tools/security/test-check-staged.sh
+++ b/tools/security/test-check-staged.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# F∆I Platform — smoke tests for `tools/security/check-staged.sh`.
+# Ch∆In — smoke tests for `tools/security/check-staged.sh`.
 #
 # Spins up an isolated tempdir per scenario, stages a tripwire,
 # and asserts the security script either passes or fails with the