refactor(errors): surface 57 deferred catch-and-swallow sites via logger

The earlier sweep cleaned the hot path (worker/runtime/automation/api-
server/ipc core — 59 sites). This pass finishes the deferred long tail:
main/* services, database/* CRUD modules, api-server/* routes, ipc-*
handlers, thread-integration, automation helpers, browser, skills.

Default strategy: catch (error) { logger.warn("[module] context:", ...) }
— preserve current behavior, make the failure visible instead of
silently hidden. Widened 3 logger interface signatures to include warn
where callers only passed info/error previously (thread-helpers,
host-environment-service, ipc-domain-common).

Legitimate boundaries left intact: JSON.parse on untrusted input, DNS
resolver no-records paths, explicit safe* helpers (safeJson, parseJson,
parseTriggerDetail), URL-parse predicates, and `<unserialisable>`
fallbacks inside the prompt-builder summarisers. Each kept catch now
either has a reason in context or is a documented safe* helper.

Tests adjusted only where test-constructed no-op loggers needed a warn
stub (message-dispatch, company-mode-switch, ipc-agent-graph-handlers).

With the earlier pass, AgentCompany no longer has silently-swallowing
catch blocks in main-process or renderer business code.

src/main/database/backup.ts

@@ -2,6 +2,7 @@ import { chmodSync, existsSync, mkdirSync } from "node:fs";
 import { copyFile, cp, rm } from "node:fs/promises";
 import { join } from "node:path";
 import { DatabaseSync, backup as backupDatabase } from "node:sqlite";
+import log from "electron-log/main.js";
 
 async function copyIfExists(source: string, destination: string) {
   if (!existsSync(source)) {
@@ -107,8 +108,8 @@ export function buildBackupMethods(
           try {
             deps.setDb(deps.openConnection());
             deps.init();
-          } catch {
-            // Reopen failed. Caller sees original + recovery messages.
+          } catch (reopenError) {
+            log.error(`[database/backup] Reopen failed after restore/recovery failure:`, reopenError instanceof Error ? reopenError.message : String(reopenError));
           }
           throw new Error(
             `Restore failed: ${message}. Recovery also failed: ${recoveryMessage}. Previous profile is at ${recoveryDir}.`,