The user called out the LLM training data bias: 'small files are
good, large files are bad.' This is wrong for production codebases.
Unreal has 15K+ line files; OS kernels, game engines, compilers all
routinely have 10K+ line files. File size is a non-issue. Cognitive
load is managed via naming, regions, and navigation tools (the
manual-slop MCP) — NOT via file splitting.
Updates:
1. AGENTS.md (master agent guidance):
- Added 'File Size and Naming Convention' section
- Added the hard rule: 'New namespaced src/<thing>.py files may
only be created on the user's explicit request. If you find
yourself about to create one, ASK FIRST.'
- Defaults: helpers and sub-systems go in the parent module
2. conductor/workflow.md (Guiding Principles):
- Removed 'Do NOT perform large file writes directamente' from
principle 7 (it was a delegating rule, but 'large file writes'
carried the propaganda)
- Added principle 8: 'File Naming Convention (HARD RULE)' that
references AGENTS.md
- Re-phrased principle 9 (Research-First) to clarify it's about
navigation efficiency, not file size
3. conductor/code_styleguides/python.md:
- Removed the 'extremely large files that violate the Anti-OOP
rule by necessity' framing
- Added the new rule about new src/<thing>.py files
4. .opencode/agents/tier3-worker.md and .opencode/agents/tier4-qa.md:
- Re-phrased 'Do NOT read full large files' to 'Use skeleton
tools to navigate any file regardless of size. File size is
not a concern; the right tools are.'
- Added the new rule about not creating new src/<thing>.py
files unless user explicitly requests it
5. conductor/tracks/qwen_llama_grok_followup_20260611/plan.md:
- Updated the 'Naming Convention' section to reference the new
'user explicit request' rule
This is docs-only. No code changes. The rule is now codified:
agents must ASK FIRST before creating new top-level src/ files.
ed
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