08 — Add per-pet personality runtime

[XMethues]

Parent

#1

What to build

Add a personality profile keyed by Petdex slug. Personality changes how the pet speaks, but never changes cultivation rules, rewards, penalties, or saved progression.

Acceptance criteria

• Each Petdex slug has an explicit personality state: undecided, neutral/declined, or configured.
• HTTP read and update operations address personality by Petdex slug.
• Personality updates validate allowed fields, event groups, and text-length limits.
• A configured profile influences utterance style and line pools while the speaker name still comes from the current Petdex display name.
• Switching pets reports the selected pet's personality state and whether a one-time creation prompt is required.
• Returning to a configured or declined pet does not request the prompt again.
• A user can later replace, reset, or neutralize a personality explicitly.
• Personality operations cannot alter cultivation fields or shared progression.
• The frontend renders the resulting utterance for the current pet.
• Tests exercise the runtime through HTTP and assert behavior and schema, not exact generated prose.

Blocked by

#8.