rename: Android is Inkwell — package, applicationId, uniffi class, assets

Step 4 of milestone 481 (Scribe note 5071: a full rename).

- namespace and applicationId com.fabledsword.inkwell; the Kotlin package moves
  with them, and ktlint re-sorted the imports the rename reordered (checked
  locally with CI's ktlint 1.4.0 and detekt 1.23.7, both clean)
- uniffi: class Inkwell in com.fabledsword.inkwell.core, InkwellApplication,
  InkwellTheme, Theme.Inkwell, log tags, prefs and work names, client agent
  inkwell-android
- the lane publishes inkwell.apk / inkwell-android.json; fetch-clients,
  guard-forward, publish-release and write-manifest read the same names

A new applicationId is a new app. The old ThoughtSync app keeps its own store
and stays installed beside it. Notes cross over by syncing, and the old app is
then removed by hand.

Kept: the signing keyAlias is still "thoughtsync". It names the key inside the
existing keystore, and the key, and so the certificate, are unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

android/app/build.gradle.kts

@@ -141,7 +141,7 @@ val rustInputs =
  * build, and neither is worth holding signed APKs up for. Scribe #2810.
  */
 val rustProfile =
-    (project.findProperty("THOUGHTSYNC_CARGO_PROFILE") as String?)?.takeIf { it.isNotBlank() }
+    (project.findProperty("INKWELL_CARGO_PROFILE") as String?)?.takeIf { it.isNotBlank() }
         ?: "debug"
 
 val jniLibsOut = layout.buildDirectory.dir("rustJniLibs")
@@ -169,11 +169,11 @@ val generateBindings =
     }
 
 android {
-    namespace = "com.fabledsword.thoughtsync"
+    namespace = "com.fabledsword.inkwell"
     compileSdk = 36
 
     defaultConfig {
-        applicationId = "com.fabledsword.thoughtsync"
+        applicationId = "com.fabledsword.inkwell"
         // 26 (Android 8, 2017) matches Minstrel and clears the NDK's floor with
         // room to spare.
         minSdk = 26
@@ -181,9 +181,9 @@ android {
         // Injected by CI from the git tag + commit count for a release; "dev"
         // locally so the About screen reads honestly rather than claiming 1.0.
         val nameOverride =
-            (project.findProperty("THOUGHTSYNC_VERSION_NAME") as String?)?.takeIf { it.isNotBlank() }
+            (project.findProperty("INKWELL_VERSION_NAME") as String?)?.takeIf { it.isNotBlank() }
         val codeOverride =
-            (project.findProperty("THOUGHTSYNC_VERSION_CODE") as String?)?.toIntOrNull()
+            (project.findProperty("INKWELL_VERSION_CODE") as String?)?.toIntOrNull()
         versionCode = codeOverride ?: 1
         versionName = nameOverride ?: "dev"
 
@@ -215,7 +215,10 @@ android {
                 // Hardcoded, and NOT a secret: the alias is fixed for the life of
                 // this app and is written into the certificate every install
                 // already carries. Hiding it would buy nothing and stop this file
-                // describing its own signing setup.
+                // describing its own signing setup. It still says `thoughtsync`
+                // after the rename to Inkwell, because it names the key inside the
+                // existing keystore, and renaming it would only stop that key being
+                // found. Same key, so the signing certificate did not change either.
                 keyAlias = "thoughtsync"
                 // PKCS12 cannot hold a key password distinct from the store
                 // password — keytool refuses to set one — so this is the same