fix(TOOLS): declare graphology deps for MemoryGraph.ts

[Luo0oo]

Bug

LifeOS/install/LifeOS/TOOLS/MemoryGraph.ts imports three npm packages that are not declared in any package.json in the repo:

import Graph from "graphology";
import louvain from "graphology-communities-louvain";
import pagerank from "graphology-metrics/centrality/pagerank";

find LifeOS/install -name package.json | xargs grep -l graphology returns nothing. Fresh installers hit Cannot find module 'graphology' the first time they invoke bun ~/.claude/LIFEOS/TOOLS/MemoryGraph.ts build, which silently breaks Pulse's /api/memory/graph route (returns empty graph.json with the "run: bun LIFEOS/TOOLS/MemoryGraph.ts build --all" hint that then also fails).

Fix

Adds LifeOS/install/LifeOS/TOOLS/package.json declaring the 3 direct deps with ^ caret ranges (matching the house style used by sibling manifests like TOOLS/TokenXray/package.json and PULSE/Observability/package.json).

Uses parent-directory scope deliberately, rather than moving MemoryGraph.ts into a TOOLS/MemoryGraph/ subdir to match the exact sibling pattern of TOOLS/llcli/ and TOOLS/TokenXray/. Moving the file would break every existing consumer path:

• LifeOS/install/LifeOS/PULSE/Observability/observability.ts → handleMemoryGraphApi() reads MEMORY/GRAPH/graph.json built by this exact path
• PULSE/modules/user-index.ts references
• LIFEOS_INSTALL/engine/detect.ts + actions.ts install-time refs

Deliberate deviation is documented in the manifest's description field.

Reproducer

curl -fsSL https://ourlifeos.ai/install.sh | bash
bun ~/.claude/LIFEOS/TOOLS/MemoryGraph.ts build
# error: Cannot find module 'graphology'

After this PR, adds bun install in LIFEOS/TOOLS/ (or bun resolves via the parent walk) and the build succeeds.

Verify

cd LifeOS/install/LifeOS/TOOLS && bun install && bun MemoryGraph.ts build succeeds.