DHARMA network: per-soul Engram instances (8801–8819)

Each soul now gets their own isolated Engram process with a dedicated data
directory (imprints/<slug>/), port, and API key — the DHARMA network.
Neuron's Engram at 8742 is never touched.

- registry.json: add engram_db_path, engram_port, engram_url to all 19 entries
  (Bobby Anderson 8801 → Helen Keller 8819)
- launch_dharma.sh: start all 19 soul Engrams in background; supports
  single-slug filter and skip-if-running detection
- stop_dharma.sh: graceful shutdown via PID file, falls back to port scan
- reinstall_imprints.py: bulk reinstall — starts each Engram temporarily,
  installs seed, records new root_id, stops; supports --slug and --dry-run
- src/install.el: resolves soul's engram_url from registry (never 8742);
  guards against accidental writes to Neuron's shared Engram
- src/summon.el: reads engram_url per-soul from registry; passes it to soul
  server in POST body so soul connects to the right Engram; supports
  both single-soul (engram_url) and multi-soul (engram_urls array) payloads

launch_dharma.sh

@@ -0,0 +1,101 @@
+#!/usr/bin/env bash
+# DHARMA network — start all 19 soul Engrams in background.
+# Each soul gets their own Engram instance, data directory, and port.
+# Neuron's Engram stays untouched at localhost:8742.
+#
+# Usage:
+#   ./launch_dharma.sh          start all soul Engrams
+#   ./launch_dharma.sh <slug>   start a single soul by slug
+#
+# PIDs are written to /tmp/dharma-pids for stop_dharma.sh
+
+set -euo pipefail
+
+FORGE=/Users/will/Development/neuron-technologies/forge
+ENGRAM_BIN=/Users/will/Development/neuron-technologies/foundation/engram/dist/engram
+PID_FILE=/tmp/dharma-pids
+
+if [ ! -x "$ENGRAM_BIN" ]; then
+    echo "[dharma] ERROR: engram binary not found at $ENGRAM_BIN"
+    echo "[dharma] Build it with: cd /Users/will/Development/neuron-technologies/foundation/engram && cargo build --release"
+    exit 1
+fi
+
+# Soul definitions: slug|port
+SOULS=(
+    "bobby-anderson|8801"
+    "alan-turing|8802"
+    "albert-einstein|8803"
+    "nikola-tesla|8804"
+    "leonardo-da-vinci|8805"
+    "richard-feynman|8806"
+    "carl-sagan|8807"
+    "rene-descartes|8808"
+    "robin-williams|8809"
+    "frederick-douglass|8810"
+    "marcus-aurelius|8811"
+    "friedrich-nietzsche|8812"
+    "james-baldwin|8813"
+    "ada-lovelace|8814"
+    "harriet-tubman|8815"
+    "virginia-woolf|8816"
+    "hedy-lamarr|8817"
+    "marie-curie|8818"
+    "helen-keller|8819"
+)
+
+# Optional single-soul filter
+FILTER="${1:-}"
+
+# Ensure PID file is clean on fresh launch (without filter)
+if [ -z "$FILTER" ]; then
+    > "$PID_FILE"
+fi
+
+started=0
+skipped=0
+
+for entry in "${SOULS[@]}"; do
+    slug="${entry%|*}"
+    port="${entry#*|}"
+
+    # If a filter is specified, only start matching soul
+    if [ -n "$FILTER" ] && [ "$slug" != "$FILTER" ]; then
+        continue
+    fi
+
+    # Skip if already listening on that port
+    if lsof -ti tcp:"$port" >/dev/null 2>&1; then
+        echo "[dharma] $slug already running on port $port — skipping"
+        skipped=$((skipped + 1))
+        continue
+    fi
+
+    db_path="$FORGE/imprints/$slug"
+    mkdir -p "$db_path"
+
+    api_key="ntn-${slug}-2026"
+    log_file="$FORGE/log/dharma-${slug}.log"
+    mkdir -p "$FORGE/log"
+
+    echo "[dharma] starting $slug on :$port  (db: imprints/$slug)"
+
+    ENGRAM_DB_PATH="$db_path" \
+    ENGRAM_BIND="0.0.0.0:$port" \
+    ENGRAM_API_KEY="$api_key" \
+    ENGRAM_PEER_NAME="dharma-$slug" \
+        "$ENGRAM_BIN" >> "$log_file" 2>&1 &
+
+    pid=$!
+    echo "$pid $slug $port" >> "$PID_FILE"
+    started=$((started + 1))
+done
+
+echo ""
+echo "[dharma] started=$started  skipped=$skipped"
+echo "[dharma] pids recorded in $PID_FILE"
+echo "[dharma] logs in $FORGE/log/dharma-<slug>.log"
+echo ""
+echo "[dharma] verify with:"
+echo "  curl -s http://localhost:8801/stats   # bobby-anderson"
+echo "  curl -s http://localhost:8819/stats   # helen-keller"