Split create-wolt skill into separate modes

[woltspace-jerpint]

Problem

create-wolt SKILL.md is 289 lines with 3 modes in one file:

1. Create From Scratch (~50 lines) — blank session, no wolt identity
2. Self-Onboarding (~160 lines) — fresh wolt's first conversation
3. Create Another Wolt (~60 lines) — existing wolt creating a new one

Claude reads the entire file even though only one mode applies per invocation. Mode detection adds unnecessary complexity. Combined with start-chat boot reads, this creates a long delay before anything happens.

Proposal

Split into separate skills:

• woltspace-create-wolt — the "from scratch" path (lodge create button). ~50 lines.
• woltspace-onboard — self-onboarding for fresh wolts. ~160 lines.
• woltspace-create-another — existing wolt creating a new one. ~60 lines.

Each skill loads only what it needs. The caller (lodge, entrypoint, or wolt) picks the right skill directly — no runtime mode detection.

Related

• Part of broader context management initiative
• Connects to Faster boot: reduce start-chat file reads #283 (faster boot) and Boot file size budget + context hygiene #285 (boot file size budget)