refactor: consolidate CI and local dev orchestration (#108)

## Summary
- Extract shared bootstrap functions into `scripts/bootstrap-common.sh` (eliminates ~120 lines of duplicated forge/cast commands from e2e.yml)
- Create reusable `scripts/wait-for-service.sh` for health checks (replaces 60-line inline wait-for-stack)
- Merge dev and CI entrypoints into unified scripts branching on `CI` env var (delete `docker/ci-entrypoints/`)
- Replace 4 per-service CI Dockerfiles with parameterized `docker/Dockerfile.service-ci`
- Add `sync-tax-rates.mjs` to CI image builder stage
- Fix: CI now grants txnBot recenter access (was missing)
- Fix: txnBot funding parameterized (CI=10eth, local=1eth)
- Delete 5 obsolete migration docs and 4 DinD integration files

Net: -1540 lines removed

Closes #107

## Test plan
- [ ] E2E pipeline passes (bootstrap sources shared script, services use old images with commands override)
- [ ] build-ci-images pipeline builds all 4 services with unified Dockerfile
- [ ] Local dev stack boots via `./scripts/dev.sh start`

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: openhands <openhands@all-hands.dev>
Reviewed-on: https://codeberg.org/johba/harb/pulls/108

docs/docker.md

@@ -4,11 +4,13 @@ The Docker stack powers `scripts/dev.sh` using containerized services. Every boo
 
 ## Service Topology
 - `anvil` – Base Sepolia fork with optional mnemonic from `onchain/.secret.local`
-- `bootstrap` – one-shot job running `DeployLocal.sol`, seeding liquidity, priming blocks, and writing shared env files
-- `ponder` – `npm run dev` for the indexer (port 42069 inside the pod)
-- `frontend` – Vite dev server for `web-app` (port 5173 inside the pod)
-- `txn-bot` – automation loop plus Express status API (port 43069 inside the pod)
-- `caddy` – front door at `http://<host>:80`, routing `/api/graphql`, `/health`, `/api/rpc`, and `/api/txn` to the internal services
+- `bootstrap` – one-shot job running `DeployLocal.sol`, seeding liquidity, priming blocks, and writing shared env files (uses `scripts/bootstrap-common.sh`)
+- `postgres` – PostgreSQL 16 database for Ponder indexer state
+- `ponder` – `npm run dev` for the indexer (port 42069)
+- `webapp` – Vite dev server for `web-app` (port 5173)
+- `landing` – Vite dev server for landing page (port 5174)
+- `txn-bot` – automation loop plus Express status API (port 43069)
+- `caddy` – reverse proxy at `http://localhost:8081`, routing `/app/` → webapp, `/api/graphql` → ponder, `/api/rpc` → anvil, `/` → landing
 
 All containers mount the repository so code edits hot-reload exactly as the local script. Named volumes keep `node_modules` caches between restarts.