improvement(logfire): scope block outputs per operation and refresh brand chrome (#6178)

* improvement(logfire): scope block outputs per operation and refresh brand chrome

- gate each block output on the operations that actually return it
- swap in the official Logfire mark, black tile with brand-magenta bare icon
- move host to advanced mode and alphabetize the tool registry entries
- add track-logfire-llm-cost and verify-logfire-token-target skills

* fix(logfire): honor numeric-string limits and surface token validity fields

- accept a numeric-string limit so agent-invoked calls stop silently
  falling back to Logfire's 100-row default
- keep an hour-only UTC offset intact instead of producing +05Z
- surface expiresAt and spendingCapReachedAt on Get Token Info
- document pending_span as a fourth record kind

* chore(logfire): regenerate tool metadata and document the step in the skill

- regenerate apps/sim/tools/generated/tool-outputs.ts, which CI's
  tool-metadata:check requires after a tool output change
- add the regeneration step and artifact-diff guidance to the
  validate-integration skill so the gate stops being missed

* chore(skills): sync validate-integration projections

apps/docs/components/icons.tsx

@@ -8767,12 +8767,12 @@ export function LogfireIcon(props: SVGProps<SVGSVGElement>) {
   return (
     <svg
       {...props}
-      viewBox='0 0 138 120'
+      viewBox='0 0 750 750'
       fill='currentColor'
       role='img'
       xmlns='http://www.w3.org/2000/svg'
     >
-      <path d='M137.041 90.563 73.326 2.241c-2.005-2.757-6.628-2.757-8.613 0L.998 90.563A5.32 5.32 0 0 0 0 93.664a5.331 5.331 0 0 0 3.641 5.05l63.715 20.851h.01a5.306 5.306 0 0 0 3.292 0h.01l63.715-20.85a5.265 5.265 0 0 0 3.392-3.406 5.247 5.247 0 0 0-.749-4.746h.015ZM69.022 14.412 94.56 49.815l-23.882-7.813c-.185-.06-.38-.05-.564-.094a3.484 3.484 0 0 0-.548-.09c-.185-.025-.36-.095-.544-.095-.185 0-.354.07-.539.095-.184.02-.369.05-.548.09-.19.035-.384.035-.554.094L43.644 49.77l-.15.05L69.032 14.41h-.01ZM32.94 64.438l27.802-9.104 2.968-.967v52.838L13.86 90.887 32.94 64.438Zm41.399 42.757V54.367l30.77 10.071 19.079 26.434-49.854 16.323h.005Z' />
+      <path d='M 741.496094 539.726562 L 398.203125 63.890625 C 387.398438 49.039062 362.480469 49.039062 351.789062 63.890625 L 8.492188 539.726562 C 6.746094 542.160156 5.414062 544.804688 4.496094 547.65625 C 3.578125 550.511719 3.117188 553.4375 3.117188 556.433594 C 3.117188 557.929688 3.238281 559.414062 3.472656 560.890625 C 3.703125 562.371094 4.050781 563.820312 4.511719 565.242188 C 4.972656 566.664062 5.539062 568.042969 6.214844 569.378906 C 6.890625 570.710938 7.667969 571.984375 8.542969 573.199219 C 9.417969 574.410156 10.378906 575.550781 11.433594 576.613281 C 12.484375 577.675781 13.613281 578.648438 14.816406 579.535156 C 16.023438 580.421875 17.289062 581.207031 18.617188 581.898438 C 19.941406 582.585938 21.316406 583.167969 22.734375 583.640625 L 366.03125 695.972656 L 366.085938 695.972656 C 368.96875 696.914062 371.921875 697.382812 374.953125 697.382812 C 377.984375 697.382812 380.941406 696.914062 383.824219 695.972656 L 383.875 695.972656 L 727.175781 583.644531 C 729.316406 582.953125 731.347656 582.015625 733.265625 580.839844 C 735.183594 579.660156 736.941406 578.273438 738.527344 576.679688 C 740.117188 575.082031 741.496094 573.324219 742.667969 571.398438 C 743.835938 569.476562 744.765625 567.441406 745.449219 565.296875 C 746.15625 563.15625 746.601562 560.96875 746.785156 558.722656 C 746.96875 556.480469 746.882812 554.246094 746.53125 552.023438 C 746.183594 549.796875 745.574219 547.644531 744.710938 545.566406 C 743.84375 543.488281 742.746094 541.542969 741.414062 539.726562 Z M 375.011719 129.460938 L 512.605469 320.195312 L 383.929688 278.105469 C 382.941406 277.78125 381.882812 277.835938 380.894531 277.597656 C 379.917969 277.355469 378.933594 277.195312 377.933594 277.113281 C 376.945312 276.976562 376 276.601562 375.011719 276.601562 C 374.015625 276.601562 373.097656 276.976562 372.101562 277.113281 C 371.109375 277.21875 370.121094 277.382812 369.152344 277.597656 C 368.128906 277.785156 367.082031 277.785156 366.167969 278.105469 L 238.269531 319.953125 L 237.460938 320.222656 L 375.070312 129.453125 L 375.015625 129.453125 Z M 180.597656 398.976562 L 330.394531 349.929688 L 346.386719 344.71875 L 346.386719 629.386719 L 77.804688 541.472656 Z M 403.65625 629.332031 L 403.65625 344.71875 L 569.445312 398.976562 L 672.246094 541.390625 L 403.628906 629.332031 Z M 403.65625 629.332031 ' />
     </svg>
   )
 }