Git - changes tool should avoid context blowout

Type: Bug

1. Ask agent to "review #changes" in a large changeset
2. 🐛 #changes tool calls adds 50k tokens to a conversation, causing quick summarization cycle

Expected: Make #changes smarter to NOT include ALL details when a changeset is massive, but allow the agent to progressively disclose context.

Without changes, the agent will usually list changed files first and then do smarter exploration of what changed.

VS Code version: Code - Insiders 1.106.0-insider (Universal) (48cdf17f0e856e1daca2ad2747814085a2453df0, 2025-11-07T21:38:27.361Z) OS version: Darwin arm64 24.6.0 Modes:

Item	Value
CPUs	Apple M4 Pro (14 x 2400)
GPU Status	2d_canvas: enableddirect_rendering_display_compositor: disabled_off_okgpu_compositing: enabledmultiple_raster_threads: enabled_onopengl: enabled_onrasterization: enabledraw_draw: disabled_off_okskia_graphite: enabled_ontrees_in_viz: disabled_offvideo_decode: enabledvideo_encode: enabledwebgl: enabledwebgl2: enabledwebgpu: enabledwebnn: disabled_off
Load (avg)	5, 5, 6
Memory (System)	24.00GB (0.10GB free)
Process Argv	--log trace --enable-proposed-api digitarald.agent-memory --crash-reporter-id 9b206efe-c338-4f34-baff-2aab1c48a82e
Screen Reader	no
VM	0%