Excerpts and sending

`get_excerpt`

Tier: raw_read — always prompts the phone.

{ "thread_ref": "t_…", "approval_id": "ap_…" }

Field	Rules
`thread_ref`	Required (from structured/`ask` sources)
`approval_id`	Omit first call; required on retry after approve

Call with thread_ref only → approval_required + match_code + approval_id.
Show match code + verified domain.
Retry with the same thread_ref and approval_id.

Success:

{
  "excerpt": "…",
  "subject": "…",
  "date": 1760000000,
  "found": true
}

Excerpt is length-capped (~1200 chars). found: false if nothing shareable. Wrong/spent approval_id → not_approved.

Tier: compose. Nothing is sent.

{
  "to": ["someone@example.com"],
  "subject": "…",
  "body": "…"
}

Limits: to ≤ 10, subject ≤ 200, body ≤ 20000. Success: {"created":true,"draft_id":"d_…"}.

{ "thread_ref": "t_…", "intent": "Politely decline and suggest next week" }

intent ≤ 400. Thread must be in grant. Same {created, draft_id} success.

Tier: send — always prompts the phone.

{ "draft_id": "d_…", "approval_id": "ap_…" }

Same two-step pattern as get_excerpt. Success: {"sent":true,"draft_id":"d_…"}.