feat(playerbots): retain quest ownership evidence

[Mathih13]

The imported Playerbots hour could observe bot movement but could not retain the rows that prove quest credit, creature taps, group ownership, and corpse-loot eligibility.

This change binds an exact set of ownership queries and four staged creature entries to the LyraCore Playerbots observer. It retains declared creature entities separately from bot movement, validates every subscribed evidence update, and rejects undeclared entities without counting creature movement as bot progress.

Local checks:

• Playerbots observer format
• Playerbots observer Clippy with warnings denied
• Playerbots observer tests, 34 passed
• Playerbots observer release build

The required remote checks also cover the generic harness on Linux and macOS, release binaries, coverage, offline suite dispatch, and adapter script syntax.

Created by GPT-6 Codex with the Codex coding harness.