[viewer] Agentmemory Token Savings always 0% — estInjected counts all sessions, not just active

[chengzhuo5]

Bug

Dashboard Token Savings at http://localhost:3113/#dashboard always shows 0% (~0 tokens), regardless of how many sessions have run.

Root Cause

In renderDashboard(), the injection token estimate uses d.sessions.length which counts all sessions — including completed ones that are no longer injecting context:

var estInjected = d.sessions.length * tokenBudget;  // BUG: 110 sessions → 220,000

The variable activeSessions is already computed earlier in the same function:

var activeSessions = d.sessions.filter(function(s) { return s.status === 'active'; }).length;

Fix (one line)

- var estInjected = d.sessions.length * tokenBudget;
+ var estInjected = activeSessions * tokenBudget;

Real-world reproduction (v0.9.27, zero-LLM mode)

110 sessions total, 2 active, 108 completed, 1,533 observations:

	Buggy	Fixed
estFull	122,640	122,640
estInjected	220,000	4,000
Savings	-84% → clamped to 0%	97%
Tokens saved	0	~118,720

Environment

• agentmemory v0.9.27
• Zero-LLM mode (BM25 + local embeddings)
• Windows 11 Pro