Merge ticket 050/054: bound auto-declared param cardinality, recognize log stream format

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XFUNZwCvz3kcod3352ZR2o

webapp/src/components/Docs.tsx

@@ -104,7 +104,10 @@ const SECTIONS: DocSection[] = [
         <p>
           <Code>ottyl_seq</Code>, <Code>ottyl_ts</Code>, and <Code>ottyl_fmt</Code> are reserved metric names present
           on every log line, so they're always filterable without declaring anything. <Code>ottyl_fmt</Code> holds the
-          auto-detected format of the line's text — <Code>json</Code>, <Code>logfmt</Code>, or <Code>none</Code>.
+          auto-detected format of the line's text — <Code>log_stream</Code> (macOS <Code>log stream</Code> output),{' '}
+          <Code>json</Code>, <Code>logfmt</Code>, or <Code>none</Code>. A <Code>log_stream</Code> line also gets{' '}
+          <Code>log_type</Code>, <Code>process</Code>, and <Code>pid</Code> params derived automatically from its
+          fixed-column header.
         </p>
         <p className="font-semibold text-text">Date/time formats</p>
         <p>Timestamp comparisons accept three forms:</p>