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on-claude.md

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-After a few weeks of daily use I feel like I'm getting consistently good results with Claude.
-
-I jump between two applications (always Elixir):
-
-- the work one is very large, around 3500 files, and has a VERY structured set of skills, scripts, and generally speaking tooling to work with agents.
-- my own application to manage music records which is around 200 files, which has a much smaller setup
-
-In my application, Opus 4.6 is excellent: most of the times it just one-shots the needed change. I believe it's because:
-
-1. The AGENTS.md file is predominantly generated by https://hexdocs.pm/usage_rules/readme.html, which pulls directives from dependencies.
-2. I only have two additional docs referenced in AGENTS.md:
-
-- 1 for architecture, which describes at a high level the application
-  structure, who does what, how it's stored, etc. I created that by asking
-  Opus to describe the architecture of th application in a way that would
-  help it to maintain it and extend it. I reviewed it manually and tweaked it
-  afterwards. It's updated automatically by Claude when it makes changes to
-  the codebase.
-- 1 for project conventions, again generated by asking Claude to extract
-  project conventions by analyzing the last 500 commits. Every once in a while,
-  I ask Claude to check it and update it.
-
-3. The test suite is extensive, more than I would "naturally" do. This makes it
-   that there usually is a very easy correspondence between files that get
-   changed and tests to run or edit, and Claude leverages this consistently.
-   This also means that some tests are maybe redundant.
-4. Only one skill, ui-development, which contains the auto-generated
-   documentation from a UI toolkit I'm using.