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tegwick df658e7ef9 feat: TTL enforcement and operational hardening (SAND-WP-0009)

Add TTL parser, expires_at on create, extend_ttl and expire/reap APIs,
activity-core integration doc, repo classification, registry refresh,
HTTP parity, and 69 tests.

2026-06-24 12:44:04 +02:00

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Time-to-live (TTL)

Disposable-by-default sandboxes — SAND-WP-0009.

Semantics

Each ready sandbox has:

Field	Meaning
`ttl`	Active duration string (e.g. `4h`)
`expires_at`	UTC timestamp when the sandbox should be reaped

On create, TTL comes from SandboxCreateRequest.ttl or the profile ttl.default, capped at ttl.max. Anchor is ready_at.

Duration format: positive integer + unit — s, m, h, d (e.g. 30m, 4h).

extend_ttl

Extend a live sandbox (ready or active):

sandboxer extend-ttl <sandbox_id> --duration 2h

HTTP: PATCH /v1/sandboxes/{id}/ttl with {"duration": "2h"}.

Extension adds to the current expires_at (or now if already past). Total lifetime from ready_at cannot exceed profile ttl.max.

expire / reap

TTL reap is distinct from host inventory reap-stale:

Command	Purpose
`sandboxer expire`	Sandboxes past `expires_at` or profile `ttl.idle_reap`
`sandboxer reap-stale`	Orphan host resources vs store inventory

sandboxer expire              # dry-run (default)
sandboxer expire --apply      # mark expired, destroy

HTTP: POST /v1/sandboxes/expire?apply=true

Flow on --apply:

Transition to expired (State Hub milestone)
destroy (idempotent teardown)

Profile fields

ttl:
  default: 4h
  max: 24h
  idle_reap: null   # optional; reap when updated_at + idle_reap elapsed

activity-core

Scheduled jobs should invoke sandboxer expire --apply (or HTTP equivalent). See docs/integrations/activity-core.md.

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