chore: initialize repository baseline

Import the existing Electron + React + TypeScript app as the version-control
baseline before the scanner rework (C# input/capture sidecar, resolution-anchored
layout profiles, OCR preprocessing, eval harness, rescan-merge, GOOD interop).

Housekeeping in this commit:
- Remove orphaned temp_inputhelper_block.ts (duplicate of the input-helper script).
- Ignore .claude/scheduled_tasks.lock local session state.
- Add .gitattributes to normalize line endings (LF in repo).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/lib/snapshotSummary.ts

@@ -0,0 +1,17 @@
+import type { AppSnapshot, ArtifactVerdict } from "../types/domain";
+
+export function summarizeSnapshot(snapshot: AppSnapshot) {
+  const useful = snapshot.recommendations.filter((entry: { verdict: ArtifactVerdict }) =>
+    ["keep", "character_specific", "maybe_level"].includes(entry.verdict),
+  ).length;
+  const trash = snapshot.recommendations.filter((entry: { verdict: ArtifactVerdict }) => entry.verdict === "trash_candidate").length;
+  const review = snapshot.recommendations.filter((entry: { verdict: ArtifactVerdict }) => entry.verdict === "needs_review").length;
+
+  return {
+    artifacts: snapshot.artifacts.length,
+    useful,
+    trash,
+    review,
+    builds: snapshot.builds.length,
+  };
+}