Fix bread-theme/bread-utils dependency: path -> git (broke bakery CI)

The path dependency on ../../bread-ecosystem/bread-theme (and bread-utils)
assumed a sibling checkout that doesn't exist on the CI runner — this was
the actual cause of release.yml never having succeeded, on top of the
Tauri build-path issue fixed separately. Switched to a git dependency
pinned to branch = "main" rather than a tag, since the functions this
migration needs (css_custom_properties/css_tokens) aren't in a tagged
bread-theme release yet. Verified with a full local build.

src/Cargo.lock

@@ -307,6 +307,7 @@ dependencies = [
 [[package]]
 name = "bread-theme"
 version = "0.3.1"
+source = "git+https://github.com/Breadway/bread-ecosystem?branch=main#afa3686e9acf348bc86d62b64a7b9be16739ac40"
 dependencies = [
  "dirs 5.0.1",
  "serde",
@@ -316,6 +317,7 @@ dependencies = [
 [[package]]
 name = "bread-utils"
 version = "0.3.1"
+source = "git+https://github.com/Breadway/bread-ecosystem?branch=main#afa3686e9acf348bc86d62b64a7b9be16739ac40"
 dependencies = [
  "dirs 5.0.1",
  "serde",

src/Cargo.toml

@@ -38,8 +38,9 @@ notify = "7"
 regex = "1"
 # TODO(owner): switch to a tag-pinned git dependency once bread-theme cuts a
 # release including css_custom_properties/css_tokens (added 2026-07-21 for
-# this migration, unreleased) — matches the same pending-tag pattern
-# bos-settings' old GTK Cargo.toml used for bread-utils.
-bread-theme = { path = "../../bread-ecosystem/bread-theme" }
-bread-utils = { path = "../../bread-ecosystem/bread-utils", features = ["toml"] }
+# this migration) — pinned to branch = "main" for now rather than a path
+# dependency (which broke bakery/CI builds — no sibling bread-ecosystem
+# checkout exists on the runner) since no tag has these functions yet.
+bread-theme = { git = "https://github.com/Breadway/bread-ecosystem", branch = "main" }
+bread-utils = { git = "https://github.com/Breadway/bread-ecosystem", branch = "main", features = ["toml"] }