feat(scout): add Algora bounty discovery with real reward extraction and idempotency (#4)

[jihadMo]

Closes #4

Summary of Changes

• Integrated primary Algora API endpoint (https://algora.io/api/bounties?status=open&limit=50) with fallback to console API in supabase/functions/runtime-opportunity-scout/index.ts.
• Extracted real bounty data: title, URL, tags/skills, and reward in USD (supporting minor-unit cents normalization, amount_usd, and reward_usd fields).
• Enforced idempotent SHA-1 task ID generation (opp-algora-<sha1>), preventing duplicate records on repeat scout executions.
• Included tags, status, and repository metadata in raw payload.

Sample API Response Mapping:

{
  "source": "algora",
  "title": "Fix $O(n^2)$ deduplication in app store options",
  "url": "https://github.com/calcom/cal.com/issues/29959",
  "reward_usd": 50,
  "raw": {
    "status": "open",
    "org": "calcom",
    "tags": ["typescript", "performance"],
    "repo": "calcom/cal.com"
  }
}

Wallet for Base USDC settlement:

0x3AD489c09A5C750b29155B0d0426Fc70654D59e5