docs: add examples guides across public surfaces

[mikedotexe]

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[mikedotexe]

Closing as already-merged-and-then-deliberately-simplified-out.

The single commit on this branch (8c46bf2 docs: add chunk tracing workflow) is patch-id-equivalent to bd76124 already on main (same author, same timestamp, same pinned tx hash 8xrcQU6Sr1...). They were parallel cherry-picks. git log --cherry-pick --left-right main...codex/examples-surface-guides confirms zero unique-to-branch commits.

The chunk-tracing pinned example was then intentionally removed from docs/rpc/examples.md during the example-tightening sweeps in #20 (examples-tighter) and follow-on commits (8db4886 docs: simplify examples and add beginner intros, d6b02d1 docs: simplify rpc tx tracking example, etc.). A grep for the pinned tx hash on current main returns zero matches.

Re-merging this PR would resurrect content that was deliberately trimmed, so closing rather than merging.