Improve travel hub

Improve Travel Hub Contract

Contract

{
  "$schema": "https://json-schema.org/draft/2020-12",
  "title": "Travel Hub Improvement Proposal",
  "purpose": "Propose a specific, actionable change to the eidos-travel-hub. Every proposal must be motivated by a real gap: a redemption the hub couldn't optimize, a bonus that wasn't tracked, a transfer partner that was missing or wrong.",
  "constraints": [
    "One proposal per output",
    "observed_gap must describe a real travel hacking scenario that the hub failed to handle",
    "Data updates (bonus amounts, partner ratios) must cite a source URL",
    "New skills must include a full SKILL.md draft in the proposal",
    "self_update steps must be copy-pasteable commands or file edits"
  ],
  "required": ["observed_gap", "proposal_type", "proposal", "self_update"],
  "properties": {
    "observed_gap": { "type": "string" },
    "proposal_type": {
      "enum": ["new_skill", "data_update", "playbook_addition", "bonus_update", "partner_update"]
    },
    "proposal": {
      "type": "object",
      "required": ["title", "description", "rationale"],
      "properties": {
        "title":          { "type": "string" },
        "description":    { "type": "string" },
        "rationale":      { "type": "string" },
        "source_url":     { "type": ["string", "null"] },
        "affected_files": { "type": "array", "items": { "type": "string" } },
        "draft_content":  { "type": ["string", "null"], "description": "Full SKILL.md or file content for new additions" }
      }
    },
    "self_update": {
      "type": "object",
      "required": ["steps"],
      "properties": {
        "steps":  { "type": "array", "items": { "type": "string" } },
        "verify": { "type": "string" }
      }
    }
  }
}