v0.2.5 — verify-404 + reversed capability weight tiers

Highlights

• aidress-mcp 0.2.5 — pip install -U aidress-mcp
• aidress-sdk 0.2.3 — pip install -U aidress-sdk

Changes

• /verify returns 404 for unknown agents (was a synthetic trust_score: 0 body). The SDK's verify() maps this to {"error": "Agent '…' not found in registry."} — check for an error key before trusting the result.
• Capability weight tiers reversed to match specificity intuition:

  Weight	Meaning	Max
  3	USP / most specific	1
  2	Secondary	2
  1	Generic (default)	3
  Max 6 total; validation consolidated into a single check.

MCP still exposes 11 tools. Supersedes 0.2.4 / SDK 0.2.2 (cut minutes earlier, before the verify-404 change landed).