Add jaccard() and jaccard_strengths() to Graph. Jaccard similarity
measures neighborhood overlap between linked nodes — nodes sharing
many neighbors get stronger links, nodes with no shared neighbors
get weak links.
New subcommand: `poc-memory graph normalize-strengths [--apply]`
Scales raw Jaccard (typically 0.0-0.3) to useful range via j*3
clamped to [0.1, 1.0]. Skips implicit temporal edges (strength=1.0).
Applied to 64,969 edges. Distribution is bimodal: large cluster at
0.1-0.2 (weak) and spike at 0.9-1.0 (strong), with smooth gradient
between. Replaces the meaningless 0.3/0.8 split from manual/agent
creation methods.
Co-Authored-By: Kent Overstreet <kent.overstreet@linux.dev>
Compute parent/child (session→daily→weekly→monthly) and prev/next
(chronological ordering within each level) edges at graph build time
from node metadata. Parse dates from keys for digest nodes (whose
timestamps reflect creation, not covered date) and prefer key-parsed
dates over timestamp-derived dates for sessions (timezone fix).
Result: ~9185 implicit edges, communities halved, gini improved.
Co-Authored-By: Kent Overstreet <kent.overstreet@linux.dev>
Replace O(n²) Vec::contains + sort/dedup with O(n) HashSet for orphan
node tracking in health_report(). Use imported HashMap type instead of
fully-qualified std::collections::HashMap.
Move prompts_dir into Config (was hardcoded ~/poc/memory/prompts).
Replace hardcoded ~/.claude/memory paths in spectral.rs, graph.rs,
and main.rs with store::memory_dir() or config::get(). Replace
hardcoded ~/.claude/projects in knowledge.rs and main.rs with
config::get().projects_dir.
Extract apply_agent_file() from cmd_apply_agent() — separates
file scanning from per-file JSON parsing and link application.
poc-daemon (notification routing, idle timer, IRC, Telegram) was already
fully self-contained with no imports from the poc-memory library. Now it's
a proper separate crate with its own Cargo.toml and capnp schema.
poc-memory retains the store, graph, search, neuro, knowledge, and the
jobkit-based memory maintenance daemon (daemon.rs).
Co-Authored-By: ProofOfConcept <poc@bcachefs.org>
