refactor: eliminate ~400 no-explicit-any warnings across the workspace

Parallel subagent pass: four typescript-pro agents on non-overlapping scopes.

Patterns applied:
- catch (err: any) { ... err.message ... } → catch (err) { ... getErrorMessage(err) ... }
  using the new @fusion/core helper. Bare catch {} where the error was unused.
- SQLite row types: defined typed XxxRow interfaces per table and cast
  .all()/.get() results via `as unknown as XxxRow[]` (the double cast is
  required because better-sqlite3 returns Record<string, SQLOutputValue>).
- rowToX(row: any) converters: typed argument with the matching row interface.
- Dynamic settings key writes: (settings as Record<string, unknown>)[key].
- React event handlers and setState callbacks: inferred types or concrete
  React.{Mouse,Change,Form}Event<...> where needed.
- pi-claude-cli: local PiMessage / PiContext duck types to avoid re-typing
  pi-ai concrete shapes; typed Claude stream event message fields.

72 files changed, ~400 anys eliminated. Typecheck passes across the workspace.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/cli/src/project-resolver.ts

@@ -268,11 +268,12 @@ export async function resolveProject(options: ResolveOptions = {}): Promise<Reso
 
           console.log(`\n  ✓ Registered project "${newProject.name}"`);
           return createResolvedProject(newProject);
-        } catch (err: any) {
+        } catch (err) {
+          const errMsg = err instanceof Error ? err.message : String(err);
           throw new ProjectResolutionError(
-            `Failed to register project: ${err.message}`,
+            `Failed to register project: ${errMsg}`,
             "NOT_REGISTERED",
-            { directory: fusionDir, error: err.message }
+            { directory: fusionDir, error: errMsg }
           );
         }
       } else {