docs: document MCP sanitization and tool-result annotations from the scout-slate wave - #88207
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…scout-slate wave Post-merge docs sweep for the Aug 16 scout slate. Two pages: - mcp.md: tool-result sanitization section — invisible Unicode TAG chars (U+E0000-E007F) stripped from results/resources/descriptions (#80689); vendor _meta surfaced to the model minus protocol-reserved modelcontextprotocol/mcp prefixes (#80712) - tools.md: tool result annotations section — signal-death exit notes (subprocess -signum definite, shell 128+signum hedged) (#78074); UTF-16 read_file transcoding with disclosure hint and 10MB cap (#80717) Security-policy docs (approvals/allowlist) intentionally untouched.
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Summary
Documents four user-visible behaviors that merged in the Aug 16 scout-slate wave without docs coverage — MCP output sanitization and tool-result annotations. Security-policy docs (approvals/allowlist) are intentionally untouched.
Changes
mcp.md: new "Tool-result sanitization and_meta" section — invisible Unicode TAG characters (U+E0000–E007F) stripped from server output (feat(mcp): strip invisible Unicode TAG characters from MCP content (port of block/goose#10746) #80689); vendor_metasurfaced to the model minus protocol-reserved prefixes (Surface MCP tool-result _meta to the model, minus protocol-reserved keys (port from kimi-code) #80712)tools.md: new "Tool result annotations" section — human-readable signal-death exit notes (feat(terminal): interpret signal-termination exit codes (port from kilocode#12698) #78074); UTF-16read_filetranscoding with disclosure hint (read_file: transcode UTF-16 text files to UTF-8 instead of refusing as binary (port from kimi-code) #80717)Validation
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