docs: remove obsolete Claude Code and omp docs, update references

docs/tools/leetcode.mdx

@@ -87,11 +87,4 @@ These are runtime files. In chezmoi's symlink mode, non-template, non-private fi
 
 ## omp commands
 
-Two prompt commands in `dot_omp/private_agent/commands/` target the solution files. Both expect the same on-disk format: a `/* ... */` header block (number, title, difficulty, URL, description, examples, constraints), a JSDoc `@param`/`@return` block, then one or more solution functions.
-
-| Command | File | What it does |
-| --- | --- | --- |
-| `/leetcode-eli5 <file>` | `leetcode-eli5.md` | Adds beginner-level, line-by-line comments above each statement plus a `// ====` banner with the problem number and title. It must not change the header, the JSDoc, or any code. Prints the path and number of comment lines added. |
-| `/leetcode-docs <file>` | `leetcode-docs.md` | Converts a solution into a Fumadocs MDX page at `content/docs/leetcode/<difficulty>/<category>/<number>-<slug>.mdx`: problem, examples, constraints, an intuition paragraph, the verbatim solution, and a derived complexity callout. Multiple approaches become a tab group. Prints the output path. |
-
-See [omp](/ai/omp) for how agent commands are loaded.
+`lc-elir` runs the `/leetcode-eli5` omp command, which lives in `~/.omp/agent/commands/` and is not managed by this repo.