[michalmaj]

Summary

Last planned docs-only polish batch. Scope deliberately tiny: fix the one gap where starter_raw_rpg/ was never introduced to the student in Level 3's own README.

What I found before writing anything

• starter_raw_rpg/main.py is a curated, prepared snapshot — its own header comment frames it as "result of Level 2 refactoring" with four deliberately labeled smells (M01/M02, M04, M05, M06) matching specific Level 3 missions. It is explicitly not claimed to be the literal file a student personally wrote.
• Every Level 3 mission (01-07) is fully self-contained with its own task.py and data files — students never run or edit starter_raw_rpg/main.py directly.
• starter_raw_rpg/ is referenced by path only once, incidentally, in Mission 07 (settings_and_paths) as a hardcoded-path example — the first and only place a student would encounter it before this fix.
• Project 03 (boss fight) is also self-contained; it doesn't operate on starter_raw_rpg/ either.

This matches the pattern already used for L4/L5's starters (prepared, curated, honestly framed as not-literally-what-you-wrote) — just never applied to L3.

Change

One paragraph added to level_3_validation_and_persistence/README.md, right after the level's problem statement and before the existing Pydantic-boundary diagram:

This level also includes starter_raw_rpg/ — a prepared RPG starter (not literally the file you'd have produced in Level 2) with those exact problems already labeled in its comments. You won't edit it directly; each mission works in its own self-contained files, though Mission 07 references it for a config example. Open starter_raw_rpg/main.py early if you want to see what each mission is about to fix.

No new starter_raw_rpg/README.md — the existing level README was sufficient to explain this honestly and briefly, matching the instructed default of a single changed file.

Test plan

• starter_raw_rpg/main.py path verified to exist
• New text checked against Mission 01 (doesn't claim Mission 01 uses the starter directly — it doesn't) and Mission 07 (correctly says it references the starter for a config example — it does)
• No new links added (backtick-quoted paths only, matching L4/L5's existing starter-intro style)
• tools/author_check.py → 750 checks passed, 0 errors (unchanged)
• tools/course_status.py → output unchanged
• git diff --name-only → exactly 1 file, level_3_validation_and_persistence/README.md

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