feat(kiloclaw): add inbound email routing

[RSO]

Summary

• Add kiloclaw-inbound-email, a Cloudflare Email Routing Worker that parses inbound messages, validates per-instance addresses, queues delivery, and forwards to KiloClaw over a service binding.
• Add controller-mediated inbound hook delivery so external Workers authenticate with the gateway token while OpenClaw receives the local per-boot hooks token.
• Add a KiloClaw platform endpoint to resolve active instances, route to the pinned Fly machine, and deliver inbound email payloads to /hooks/email.
• Register the new Worker in dev:start, update KiloClaw controller specs, and include the implementation plan.

Visual Changes

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (4 files)

• services/kiloclaw-inbound-email/src/index.test.ts
• services/kiloclaw-inbound-email/src/index.ts
• services/kiloclaw-inbound-email/src/parser.test.ts
• services/kiloclaw-inbound-email/src/parser.ts

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_{Reviewed by gpt-5.4-20260305 · 560,938 tokens}