feat: web_search + youtube_transcribe tools, shell interrupt backgrounding, fixes

- Add web_search tool (Firecrawl POST to /v1/search with query, limit, lang, country, scrapeOptions)
- Add youtube_transcribe tool (GET to transcriber service, handles completed/queued/failed statuses)
- Both tools registered for parent agents (always) and child agents (permission-gated)
- Added to summon enum, TOOL_DESCRIPTIONS, and core exports
- Shell interrupt: run_shell now races against user queue interrupt
  - When interrupted, command continues in background with run_shell_<uuid> job ID
  - BackgroundShellStore holds running processes, auto-cleans 10min after completion
  - retrieve tool extended to handle both agent IDs and shell job IDs
- Tool error detection: results starting with 'Error:' now marked isError in UI
- Fix TS error: cast unavailMatch[1] regex capture group to string
- Docker: network_mode host for Tailscale/LAN access to external services
- Bun.serve idleTimeout set to 60s (was default 10s)
- KeyUsage: clearer message when OpenCode usage data unavailable
- Firecrawl: only send scrapeOptions when scrape=true (avoid 400 on instances without scrape support)

1 files changed, 8 insertions, 3 deletions

diff --git a/packages/frontend/src/lib/components/KeyUsage.svelte b/packages/frontend/src/lib/components/KeyUsage.svelte
index fc85739..49c3cf6 100644
--- a/packages/frontend/src/lib/components/KeyUsage.svelte
+++ b/packages/frontend/src/lib/components/KeyUsage.svelte
@@ -307,10 +307,15 @@ function hasBucketData(bucket: UsageBucket | undefined): boolean {
 
 						{:else if entry.data.provider === "opencode-go"}
 						{#if entry.data.unavailable}
-							<p class="text-xs text-base-content/70">Check console for usage.</p>
+							<p class="text-xs text-base-content/70">Usage data not available. Set OPENCODE_COOKIE env var to enable.</p>
+							{#if entry.data.limits}
+								<div class="text-xs text-base-content/50 mt-1">
+									Limits: {entry.data.limits.fiveHour}/5h &middot; {entry.data.limits.weekly}/wk &middot; {entry.data.limits.monthly}/mo
+								</div>
+							{/if}
 							{#if entry.data.consoleUrl}
-								<a href={entry.data.consoleUrl} target="_blank" rel="noopener noreferrer" class="link link-primary text-xs">
-									Open console
+								<a href={entry.data.consoleUrl} target="_blank" rel="noopener noreferrer" class="link link-primary text-xs mt-1">
+									View usage on opencode.ai
 								</a>
 							{/if}
 						{:else}