store: Fix: Partial UUID prefix matching in cognitive memory client (git-style)

graph/fixes/fix-partial-uuid-prefix-matching-in-cognitive-memory-client-89f32e.md

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+---
+id: 89f32ef3-2d87-4b8c-aa6e-ce5a7f60566c
+type: fix
+title: "Fix: Partial UUID prefix matching in cognitive memory client (git-style)"
+tags: [cognitive-memory, fix, uuid, mcp, client.py, claude-configs]
+importance: 0.8
+confidence: 0.8
+created: "2026-02-28T06:03:13.780326+00:00"
+updated: "2026-02-28T06:03:13.780326+00:00"
+---
+
+# Partial UUID Prefix Matching in CognitiveMemoryClient
+
+## Problem
+Users had to type full UUIDs when referencing memories or edges via the client. This was inconvenient — git-style short prefix matching was missing.
+
+## Solution
+Added a `_resolve_prefix()` static method to `CognitiveMemoryClient` that resolves partial UUID prefixes to full IDs.
+
+### Resolution logic:
+1. Check for an **exact match** first (pass-through if full UUID provided)
+2. Scan all IDs with `startswith(prefix)` for partial matches
+3. **Single match** → returns the full ID
+4. **Multiple matches** → raises `ValueError` with the list of candidate IDs
+5. **No matches** → returns `None` (falls through to existing behavior)
+
+### Applied to 4 functions:
+- `_resolve_memory_path`
+- `_resolve_edge_path`
+- `edge_search` (both `from_id` and `to_id` params)
+- `related()`
+
+## Commit & Issue
+- Committed as `471d870` on `cal/claude-configs` main branch
+- Closes `cal/claude-memory#3`
+
+## Important Note
+The MCP server process must be **restarted** to pick up changes since it is long-running and does not hot-reload source files.