feat(network): correlate bounded BiDi pointer click response

[seonghobae]

Partial implementation of #28. This Draft owns typed local-end response correlation for the transported WebDriver BiDi primary-button click. Protocol success is not an observed DOM/UI post-condition and grants no browser/session/origin/document/policy authority.

Current non-force stack adoption

Current exact head is b8eaa97f7a417c79250b6b760ff214ac03d39b8a, a tree-identical ordinary two-parent adoption over predecessor 5f830324f6d5a47ac213a57528ef95649bdfd0df and current #257 8f1507346f65798a6bf4eaf370d65a2d406a6f44. No source, test, docs, workflow, dependency, gate or authority changed; #255's safe-successor topology is simply carried forward.

Predecessor CI 33965695405 and local numeric 100% evidence belong to predecessor 5f830324... only. Fresh exact-head CI 34003285350 is queued. Do not transfer the predecessor result or blind-rerun while queued.

The response boundary still accepts only the exact outstanding pointer-click correlation and leaves unrelated state untouched on malformed, mismatched-kind or unknown-id input. Keep Draft and parent-first protected integration. No workflow/ruleset/secret mutation, self-approval, bypass, force update, destructive rebase, merge, tag, release or publication was performed.

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[seonghobae]

Current-head restack verification: exact parent #257 ac7b03574ff4c99e32c240bedc3b9a7834a7e57b is repository-native CI GREEN (33770755986; Rust contracts 100700073107, Production coverage 100700073689). This head bd3652892ecc5a7ed5cf3d7faa4ac2b912c0a14d adopts that verified parent non-force while preserving the prior child lineage. Exact parent→child compare is 0 behind and three semantic paths only: crate composition plus the typed pointer-click response source and realistic response test. Parent structural routing/correlation repairs and send-failure coverage are inherited from the parent tree rather than duplicated. Fresh exact-head CI 33881791731 remains queued, so this is not a GREEN/merge-ready claim. Keep Draft; #259 remains parent-first blocked until this exact head is terminally verified.

[seonghobae]

Restacked on exact parent #257 head 53faa74beb48d0e6a77cac2f3b3ef2eca91c094a and repaired the response regression exposed by the parent protocol hardening.

RCA: the remote-error fixture used a code outside the current reviewed WebDriver BiDi ErrorCode vocabulary and omitted the required stacktrace, so it failed envelope admission before testing the intended correlated remote-error consumption. The fixture now uses a complete, valid error envelope; CHANGELOG.md also records the buyer-visible response boundary.

Exact local evidence:

• focused pointer-click response tests
• strict all-target Clippy
• full workspace tests
• documentation contracts: 22 passed, 177 subtests passed
• rustdoc with warnings denied
• pinned nightly production functions/lines/regions/branches: 100%

[seonghobae]

Current-head lineage review: live parent is #257 53faa74beb48d0e6a77cac2f3b3ef2eca91c094a, current head is b9415ba8e0376447355caa7fa093eaa0d168f6d9, and fresh compare is 9 ahead / 0 behind. Current exact CI 33901290367 is non-terminal. Earlier bd365289... and ac7b035... evidence is predecessor-only after the non-destructive parent refresh. A successful input.performActions response remains protocol evidence, not the page-observed post-condition.

[seonghobae]

Non-force restacked on PR #257 exact head ac73abfe7edd5786a7eb3eaab1a8c773093be7d3; PR #258 is now exact head a61c717e525eb94f5a4aaa68d3bfdabc9152edfd. Verification: rustfmt, all-feature/all-target check, strict Clippy, rustdoc, 141 Python contracts, and CI-equivalent pinned-nightly production function/line/region/branch coverage at 100%. Fresh hosted exact-head checks and ordered parent integration remain required.

[seonghobae]

Non-force restacked on PR #257 exact head ea2b5b78868917219c46f1304558b92490a7f6fe; PR #258 is now exact head f2ceabb3ea50b1959e936503c50cae12f3e6e480. Verification: rustfmt, all-feature/all-target check, strict Clippy, rustdoc, 141 Python contracts, and CI-equivalent pinned-nightly production function/line/region/branch coverage at 100%. Fresh hosted exact-head checks and ordered parent integration remain required.