fix: add logging to silent catch blocks

[alfredocristofano]

Issue for this PR

Closes #24327

Type of change

• Bug fix

What does this PR do?

Adds logging to selected silent catch blocks where failures were being swallowed without any signal:

• auth content parsing
• MCP child process cleanup
• provider error body parsing
• PTY teardown
• mDNS cleanup
• session error handling
• JSON/stringify and filesystem helper paths

It also replaces one catch (e: any) in session/llm.ts with unknown handling.

How did you verify your code works?

• Rebased onto current origin/dev
• Checked the diff is limited to 10 files and no longer includes unrelated import/barrel changes
• git diff --check origin/dev..HEAD

I tried cd packages/opencode && bun typecheck inside the temporary worktree, but that worktree does not have the repo dependencies installed, so TypeScript reported dependency resolution errors before checking this patch.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Based on my search, I found one related PR:

Potential Related PR:

• PR fix: add error logging to empty catch blocks in cleanup operations #18240: "fix: add error logging to empty catch blocks in cleanup operations"

  • fix: add error logging to empty catch blocks in cleanup operations #18240

  This PR appears to address a similar issue - adding logging to catch blocks that were previously silent. While it may be focused on cleanup operations specifically (vs. the broader core modules coverage in PR fix: add logging to silent catch blocks #24331), it's addressing the same category of improvement.

However, since PR #24331 is the current PR and it appears to have broader scope (across 10 production files with ~30 catch blocks vs. cleanup operations), this is likely a separate, complementary effort rather than a true duplicate.

[github-actions]

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