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

containers/ponder-dev-entrypoint.sh

@@ -1,92 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-ROOT_DIR=/workspace
-GIT_BRANCH="${GIT_BRANCH:-}"
-
-# Checkout branch if specified
-if [[ -n "$GIT_BRANCH" ]]; then
-  cd "$ROOT_DIR"
-  git config --global --add safe.directory "$ROOT_DIR" 2>/dev/null || true
-  CURRENT=$(git rev-parse --abbrev-ref HEAD 2>/dev/null || echo "unknown")
-
-  if [[ "$CURRENT" != "$GIT_BRANCH" ]]; then
-    echo "[ponder-entrypoint] Switching to branch: $GIT_BRANCH"
-    # Try local branch first, then remote
-    if git rev-parse --verify "$GIT_BRANCH" >/dev/null 2>&1; then
-      git checkout "$GIT_BRANCH" 2>/dev/null || echo "[ponder-entrypoint] WARNING: Could not checkout $GIT_BRANCH"
-    else
-      git fetch origin "$GIT_BRANCH" 2>/dev/null || true
-      git checkout "$GIT_BRANCH" 2>/dev/null || echo "[ponder-entrypoint] WARNING: Could not checkout $GIT_BRANCH"
-    fi
-  fi
-fi
-
-CONTRACT_ENV=$ROOT_DIR/tmp/containers/contracts.env
-PONDER_WORKDIR=$ROOT_DIR/services/ponder
-
-while [[ ! -f "$CONTRACT_ENV" ]]; do
-  echo "[ponder-entrypoint] waiting for contracts env"
-  sleep 2
-done
-
-cd "$PONDER_WORKDIR"
-
-# Wait for .env.local to be created by bootstrap
-while [[ ! -f .env.local ]]; do
-  echo "[ponder-entrypoint] waiting for .env.local"
-  sleep 2
-done
-
-# Load contract deployment info
-source "$CONTRACT_ENV"
-START_BLOCK=$(grep START_BLOCK .env.local 2>/dev/null | cut -d= -f2 || echo "")
-EXPECTED_SCHEMA="ponder_local_${START_BLOCK}"
-
-# Check if schema changed (contract redeployment detected)
-if [[ -n "$START_BLOCK" ]]; then
-  CURRENT_SCHEMA=$(grep DATABASE_SCHEMA .env.local 2>/dev/null | cut -d= -f2 || echo "")
-
-  if [[ -n "$CURRENT_SCHEMA" && "$CURRENT_SCHEMA" != "$EXPECTED_SCHEMA" ]]; then
-    echo "[ponder-entrypoint] Contract redeployment detected (schema changed: $CURRENT_SCHEMA -> $EXPECTED_SCHEMA)"
-    echo "[ponder-entrypoint] Resetting Ponder database..."
-
-    export PGPASSWORD=ponder_local
-    psql -h postgres -U ponder -d ponder_local -c \
-      "DROP SCHEMA IF EXISTS \"$CURRENT_SCHEMA\" CASCADE;" 2>/dev/null || true
-
-    echo "[ponder-entrypoint] Old schema dropped successfully"
-  fi
-fi
-
-REQUIRED_DIST="$ROOT_DIR/kraiken-lib/dist/index.js"
-if [[ ! -f "$REQUIRED_DIST" ]]; then
-  echo "[ponder-entrypoint] ERROR: Run ./scripts/build-kraiken-lib.sh before starting containers" >&2
-  exit 1
-fi
-
-# Check if node_modules is populated (named volume may be empty on first run)
-if [[ ! -d node_modules/.bin ]]; then
-  echo "[ponder-entrypoint] Installing dependencies..."
-  npm ci --loglevel error && npm cache clean --force 2>&1 || {
-    echo "[ponder-entrypoint] npm ci failed, trying npm install"
-    npm install --no-save --loglevel error && npm cache clean --force
-  }
-else
-  echo "[ponder-entrypoint] Using cached node_modules from volume"
-fi
-
-# Load and export all environment variables from .env.local
-if [[ -f .env.local ]]; then
-  echo "[ponder-entrypoint] Loading environment from .env.local"
-  set -a
-  source .env.local
-  set +a
-fi
-
-export CHOKIDAR_USEPOLLING=${CHOKIDAR_USEPOLLING:-1}
-export HOST=0.0.0.0
-export PORT=${PORT:-42069}
-export PONDER_RPC_TIMEOUT=${PONDER_RPC_TIMEOUT:-20000}
-
-exec npm run dev