Headroom Daily: Enterprise Copilot Routing and Cache Stability
Three merged Copilot fixes restore Enterprise routing, ghost-text completions, and extension carryover, while cache and performance patches cut prompt-cache busts and proxy stalls.
Duration: PT2M37S
Episode overview
This episode is a short developer briefing from Headroom Daily.
It explains recent repository work in plain language.
- Show: Headroom Daily
- Published: 2026-10-14T22:00:34Z
- Audio duration: PT2M37S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Hello, it's October 14th, 2026, and this is Headroom Daily.
Yesterday's merges focused on making enterprise Copilot sessions work behind strict firewalls and stopping the proxy from accidentally busting Anthropic's prompt cache.
First, Copilot routing. PR 4155 now honors the Business and Enterprise chat host advertised during login by default, instead of folding everything to the generic host. That fixes sites where the generic host is unreachable and connections just looked random. A live Business seat test passed 36 of 36 model calls on…
Second, cache correctness. Merged PR 4043 keeps side requests like subagent summaries and side queries from resetting conversation lineage, a bug that collapsed cache reads to just the system prompt in production. PR 4153 stops moving valid mid-conversation system messages to the top level for Haiku 5.5, preserving…
Third, proxy stalls and idle burn. PR 4160 makes line-anchored detection expressions linear on blank-line runs, cutting a 10,000-line case from over three seconds to milliseconds and unblocking health checks. PR 4189 limits the Rust content detector to a single thread, dropping light-load CPU from about two cores to…
Also merged:…
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