fix(cli): validate selected local paths before resolution

Reuse the nonempty NUL-free local path contract before normalization in artifact commands, auxiliary inputs, and output destinations. Empty selections now fail at parsing instead of selecting the working directory; explicit relative paths preserve their target.

Public CLI checks cover primary and auxiliary empty paths, exact relative-file digest, explicit current-directory selection, symlink parent semantics, and environment export inputs. Correct the desktop fixture to assert the existing CLI validation envelope.

src/cli/sqliteCommands.ts

@@ -5,6 +5,7 @@ import { logCliCommand } from "../cliLogging.js";
 import type { Logger } from "pino";
 import type { CliInstance } from "./types.js";
 import { withCommandCancellation } from "./commandCancellation.js";
+import { localPathStringSchema } from "../domain/localPath.js";
 import { absoluteCallerPath } from "../filesystem/callerPath.js";
 import { finishAnalysisCommand } from "./finishAnalysisCommand.js";
 import { inspectSqliteDatabaseInputSchema } from "../domain/sqlite/sqliteDatabase.js";
@@ -20,7 +21,7 @@ export const registerSqliteCommands = (
     description:
       "Inspect SQLite schema and optional ordinary-table rows from a local snapshot",
     args: z.object({
-      path: z.string().describe("Local SQLite database snapshot"),
+      path: localPathStringSchema.describe("Local SQLite database snapshot"),
     }),
     options: z.object({
       workerTimeoutMs: inspectSqliteDatabaseInputSchema.shape.worker_timeout_ms,