chore(examples): bump the docs examples to pi-coding-agent 1.0.2

[eersnington]

Bumps the docs examples (examples/docs) to pi-ai and pi-coding-agent 1.0.2, the versions @rivet-dev/pi now uses.

• On 1.0.0, tools made with defineTool and DefaultResourceLoader did not type-check against pi()'s 1.0.2 types.
• Apps that install pi-coding-agent themselves, for example to call defineTool, need the same bump when they move to @rivet-dev/pi 0.2.0.

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This is part 7 of 11 in a stack:

•  11  fix(pi): persist migrated pi() session entries #330
•  10  feat(pi): expose the pi session to actor code as c.pi #329
•  9  perf(pi): connect the pi() sandbox on first use #328
•  8  feat(pi): drain and resume pi() runs #327
•  7  chore(examples): bump the docs examples to pi-coding-agent 1.0.2 #326 👈
•  6  test(pi): let a run finish and the actor sleep when its caller disconnects #325
•  5  feat(pi): drain pi durable actors across upgrades #324
•  4  feat(pi): stream pi durable conversations to clients #323
•  3  feat(pi): add piDurable actor #322
•  2  feat(pi): store pi durable sessions in actor sqlite #321
•  1  feat(pi): add piDurable() and drain, resume, and c.pi for pi() #320