[Maharsh17]

Redesigns the Goal Evidence section of the student sheet.

• Keeps the history table (every goal on every run, run headers pick the run, one-line state per goal for the picked run, Left the Island row). Its goal column now lines up with the board below, and the picked run's bars are solid while other runs are lighter, matching the pips.
• Below it, one board row per goal: name and source, pips for the ladder, the step written out ("step 2 of 4"), the next step up, then facts and an Evidence drawer.
• The Execution Rubric uses the same row, with Title Case dimension names; the provisional chip stays.
• Plain language for semi-technical readers: run notes as sentences, "tests counted / inconclusive", "test worlds", "signals", "step changes", and plain names for common engine flags (raw name kept in the tooltip).
• One-line intro.

Tests updated for the new wording (49 passing); build, design detector and crispness scan clean.

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