chore: track inherited TODO/FIXME tech debt

[NoNFake]

Summary

The repository contains roughly 303 TODO / FIXME / HACK / XXX markers. All of them live in inherited upstream code. None are in fork-specific areas (packages/opencode/src/pentest, the TUI background component, or script/).

This issue tracks the inventory. Individual markers should be promoted to their own issues only when someone intends to act on them; otherwise they stay as code comments.

Breakdown by package

Package	Markers
packages/web	127
packages/app	64
packages/core	41
packages/ui	25
packages/opencode	22
packages/session-ui	4
packages/console	3
packages/tui	3
packages/codemode	3
packages/sdk	2
packages/server	1
packages/llm	1
packages/desktop	1
packages/client	1
other (specs, skills)	3

How to find them

Search the repository for TODO, FIXME, HACK, or XXX. To narrow down:

git grep -nE "TODO|FIXME|HACK|XXX" -- packages/core

Policy going forward

• New fork code should not add markers without a linked issue.
• When a marker blocks work, open a focused issue and reference the file and line.
• Do not mass-rewrite inherited markers just to reduce the count.