docs: sync CI/CD docs to ADR-0002 final state (ghcr + Woodpecker deploy-only) [ci skip]

ADR-0002 is fully landed (issues #11-#32 closed): every owned image now
builds on GitHub Actions and pushes to ghcr.io/viktorbarzin/<name>, with
Woodpecker reduced to deploy-only. The Forgejo container registry is frozen
and emptied; there are no in-cluster image builds or CI test runs anywhere.
The docs still described the old hybrid topology (DockerHub builds,
Woodpecker-native owned-app builds, the per-pattern migration lists, the
tripit-only pilot framing), which would mislead future sessions and
incident response.

This brings the docs to the completed reality (closes #33):

- docs/architecture/ci-cd.md: full rewrite as the canonical CI/CD reference —
  the fleet GHA->ghcr->Woodpecker-deploy pattern, public/private ghcr package
  split, infra-owned image workflows (incl. infra-ci on ghcr), the frozen
  Forgejo registry, what Woodpecker still runs, and the #31 decommissions.
- .claude/CLAUDE.md: rewrite the "CI/CD Architecture" section to the
  fleet-wide final state; FIX the stale claim that claude-memory-mcp builds
  to DockerHub (it is GHA->ghcr); note owned images now live on ghcr and the
  Forgejo registry is frozen/break-glass near the image-registry bullet.
- .claude/reference/service-catalog.md: f1-stream is GHA->ghcr + Woodpecker
  deploy-only (was "Woodpecker-native build->deploy").
- stacks/{tuya-bridge,android-emulator}/variables.tf + stacks/terminal/main.tf:
  cosmetic description/comment updates (forgejo -> ghcr; terminal-lobby has no
  CI pipeline). Description/comment text only — no stack logic changed.

Historical records (docs/post-mortems/*, docs/plans/*) and ADR-0002 itself
are left untouched as point-in-time records.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

stacks/android-emulator/variables.tf

@@ -6,5 +6,5 @@ variable "tls_secret_name" {
 variable "image_tag" {
   type        = string
   default     = "latest"
-  description = "android-emulator image tag at forgejo.viktorbarzin.me/viktor/android-emulator. Built by GHA (.github/workflows/build-android-emulator.yml) -> ghcr.io/viktorbarzin/android-emulator on changes to stacks/android-emulator/docker/ (ADR-0002). :latest tracks the newest build."
+  description = "android-emulator image tag at ghcr.io/viktorbarzin/android-emulator. Built by GHA (.github/workflows/build-android-emulator.yml) on changes to stacks/android-emulator/docker/ (ADR-0002). :latest tracks the newest build."
 }