docs(openclaw-plugin): list openviking_tool_result_read/search/list in plugin tool tables (#2058)

[r266-tech]

What

The examples/openclaw-plugin README tool tables list 8 tools, but openclaw.plugin.json registers 11 — the externalized-tool-result drilldown trio added in #2058 (openviking_tool_result_read / _search / _list) has never appeared in the tables. This adds the three missing rows to both README.md and README_CN.md so the canonical tool tables match the actual registered/exposed surface.

Grounding

• examples/openclaw-plugin/openclaw.plugin.json registers all 11 tools, including openviking_tool_result_read/search/list.
• examples/openclaw-plugin/index.ts registers the three as first-class tools with descriptions: read = "Restore the full original content of a tool result that was externalized by OpenViking" (L1606); search = "Search inside an externalized tool result for a keyword" (L1703); list = "List externalized tool results for the current session" (L1807).
• The sibling drilldown tools ov_archive_search / ov_archive_expand are already in the table, so the three new rows follow the existing convention rather than introducing a new one.

Scope

Strictly the tool tables (the exhaustive canonical reference of registered tools). The curated "Tools and Expandability" prose subset is left untouched — it already omits some registered tools by design. Pure docs, dual-doc EN + zh.

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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

🎫 Ticket compliance analysis ✅ 2058 - Fully compliant Compliant requirements: Added openviking_tool_result_read / openviking_tool_result_search / openviking_tool_result_list to README.md Added the same three tools to README_CN.md Tool tables now match the registered tool surface

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🏅 Score: 100

🧪 No relevant tests

🔒 No security concerns identified

✅ No TODO sections

🔀 No multiple PR themes

⚡ No major issues detected

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