add status indicators for tool execution and web scraping #699
Description
Part of #694
Operations
| ID | Location | Operation | Est. Latency |
|---|---|---|---|
| SPIN-011 | zeph-tools/src/shell.rs execute |
Shell command execution | 0.1-60s |
| SPIN-012 | zeph-tools/src/web_scrape.rs scrape |
Web page scraping | 1-10s |
| SPIN-022 | zeph-tools/src/composite.rs execute |
Composite tool dispatch | varies |
| SPIN-023 | zeph-index/src/lib.rs index |
Code indexing | 2-30s |
Priority: P2
Tool execution status could show the tool name (e.g. "running shell command...", "scraping url...").