Fix scoped semantic drafts and dependent review controls

harness/release-semantic-gui.md

@@ -42,7 +42,8 @@ Base: `d130013`. Dedicated build target:
 
 ## Verification
 
-Verified against core `6bb2583`, using only the dedicated desktop target:
+Verified after the independent scalar review fixes on SEM `6ad3cb`, using only the
+dedicated desktop target (core behavior remains based on `6bb2583`):
 
 ```powershell
 $env:CARGO_TARGET_DIR='D:/CodexBuilds/Capella2-semantic-desktop-target'
@@ -51,7 +52,8 @@ cargo clippy --locked -p oa-desktop --all-targets -- -D warnings
 cargo build --locked -p oa-desktop
 ```
 
-All **272 desktop tests passed**, including **11 new semantic review tests**.
+All **277 desktop tests passed**, including **11 original semantic review tests**
+and **5 scalar review regression tests**.
 Strict Clippy and the desktop build passed. The existing migration test's header
 assertion now follows `SCHEMA_VERSION` instead of expecting schema 4.
 
@@ -64,6 +66,25 @@ relationship role/bound candidates with retained identity/endpoints; and exact
 inherited-annotation cleanup approval, cleared when decisions change. Unselected
 invalid scalar drafts remain retained without contaminating another candidate.
 
+The independent scalar review found three gaps, now corrected:
+
+- Structural scalar edits replace only their authorized subtree. Clearing an
+  invalid selected bound, changing a variant, and adding/removing/reordering a
+  literal retain untouched raw inputs and editor buffers, including invalid
+  inputs belonging to another decision.
+- Dependent default, reference and port controls read a noncommitting context
+  composed by the same scalar Keep/Take/Candidate assembler as the request. Raw
+  candidates remain separate. Incomplete inputs use their stored shape only for
+  those controls; request creation and Apply still reject invalid selected input.
+  The Boolean-source/Integer-target default reproduction now offers Boolean
+  literals in both directions. Tests also cover Candidate type, Keep reversion,
+  storage-dependent default controls and mechanism-dependent reference choices.
+- Keyed fact headings display live names with stable aliases or deleted UUIDs.
+  Message annotation headings include the complete qualified path and field.
+
+The regression tests exercise App events, the actual default-form helpers and
+button availability, exact source retention before Apply, and one-step undo.
+
 Built executable:
 `D:/CodexBuilds/Capella2-semantic-desktop-target/debug/arcadia-studio.exe`.
 The build target is idle. No native application was launched by this task.