[Changyong Gong (chagong)]

Summary

• add patch_wiki_pages for bounded exact-match updates to existing wiki pages without model-generated whole-page replacements
• require the pinned page blob SHA, exact-once non-overlapping anchors, the configured wiki destination precondition, and the existing exact-base publication lease
• preserve untouched UTF-8 bytes and existing one-attempt atomic publication, authorization, privacy, and size safeguards
• wire the tool only into the team-memory writer, structured outcomes, telemetry, prompts, policy, and documentation
• teach team-memory to prefer exact patches instead of returning needs-review solely because an existing page is large

Validation

• 240 standalone MCP tests passed
• 404 runnable application tests passed
• Python compilation passed
• git diff --check passed

The unfiltered Windows application suite remains locally blocked only by missing jq in the executable workflow tests and an unrelated Windows packaging-test harness limitation.

[Copilot]

🟢 Approval recommended

No blocking issues remain; bounded patch validation reuses existing authorization and atomic publication safeguards.

No open issues 🎉

What changed in this PR

Adds exact-match wiki page patching so IssueLens can update existing team memory without regenerating whole pages.

Changes:

• Validates pinned page SHAs and unique, non-overlapping replacements before atomic publication.
• Exposes patching only to the team-memory writer, retaining existing authorization and publication safeguards.
• Updates telemetry, tests, prompts, policy, and documentation.

File	Description
tests/​test_telemetry.py	Tests patch destination attribution.
tests/​test_team_memory_instructions.py	Verifies writer access and reader restrictions.
tests/​test_mcp_tool_documentation.py	Includes patching among documented writes.
telemetry.py	Tracks patch operations as wiki writes.
skills/​team-memory/​SKILL.md	Explicitly prohibits reader patching.
skills/​issuelens-config/​SKILL.md	Restricts patching to authorized maintenance.
main.py	Enables patching for the team-memory writer.
github_app_mcp/​tests/​test_wiki.py	Tests patch preservation, conflicts, and limits.
github_app_mcp/​tests/​test_wiki_transport.py	Adds a patch test helper.
github_app_mcp/​tests/​test_wiki_client.py	Tests patch authentication and policy enforcement.
github_app_mcp/​tests/​test_stdio.py	Updates writer discovery expectations.
github_app_mcp/​tests/​test_server.py	Tests patch schema, routing, and access gates.
github_app_mcp/​src/​issuelens_github_mcp/​wiki.py	Implements bounded exact replacements and atomic publication.
github_app_mcp/​src/​issuelens_github_mcp/​server.py	Exposes the writer-only patch tool.
github_app_mcp/​src/​issuelens_github_mcp/​outcomes.py	Classifies patching as a write operation.
github_app_mcp/​src/​issuelens_github_mcp/​github.py	Shares authorization between patch and full-page writes.
github_app_mcp/​README.md	Documents patch usage and limits.
examples/​team-memory.md	Demonstrates patch-first maintenance.
docs/​guide.md	Explains exact-patch workflows.
agents/​team-memory.md	Prefers patches for suitable existing pages.
agents/​issuelens.md	Recognizes authorized patch maintenance.
.github/​issuelens/​team-memory.md	Updates repository maintenance policy.
.github/​copilot-instructions.md	Documents the additional writer capability.

_{Review effort: Balanced}