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ptr727 merged 7 commits into from
Aug 29, 2026
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub #326

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9bf3e0a
Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub
ptr727 Aug 29, 2026
97fdca8
Fix broken links this PR's section move introduced
ptr727 Aug 29, 2026
917508b
Fix two more references stale after the AGENTS.md/GOVERNANCE.md split
ptr727 Aug 29, 2026
31fbcbc
Fix three CodeRabbit-flagged accuracy issues in AGENTS.md/OPERATIONS.md
ptr727 Aug 29, 2026
1dea495
Point the clean-compile command sequence at tasks.json, not CODESTYLE.md
ptr727 Aug 29, 2026
5b8ce01
Fix dead hub link and restore the CI-spelling-scope rationale
ptr727 Aug 29, 2026
b9e970c
Add OPERATIONS.md to AGENTS.md's canonical-document map
ptr727 Aug 29, 2026
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16 changes: 8 additions & 8 deletions .github/copilot-instructions.md
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Original file line numberDiff line numberDiff line change
Expand Up@@ -2,25 +2,25 @@

Repository conventions for GitHub Copilot (and any other AI agent reading this file).

The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../AGENTS.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.
The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.

For code-style rules, see [`CODESTYLE.md`](../CODESTYLE.md) at the repo root - one guide with a General section and the .NET section.
Comment thread
ptr727 marked this conversation as resolved.

Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` to be provider-independent.
Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` or `GOVERNANCE.md` to be provider-independent.

## Commit Messages and Pull Request Titles

Summarized for VS Code's generators; the full rules, rationale, and examples are in [AGENTS.md "Pull Request Title and Commit Message Conventions"](../AGENTS.md#pull-request-title-and-commit-message-conventions).
Summarized for VS Code's generators; the full rules, rationale, and examples are in [GOVERNANCE.md "Pull Request Title and Commit Message Conventions"](../GOVERNANCE.md#pull-request-title-and-commit-message-conventions).

- Imperative subject, <= 72 characters, no trailing period; optional blank-line-separated body for the non-obvious *why*.
- US English, title case with lowercase short bind words; no vague titles, no `Co-Authored-By:` unless asked, no release-bump magnitude (NBGV handles versioning). Dependabot's `Bump X from Y to Z` titles are fine.
- develop PRs squash-merge (`gh pr merge --squash`), main PRs merge-commit (`--merge`); a mismatched flag is rejected by branch protection.

## GitHub Copilot Review Runbook

> This runbook implements the [AGENTS.md "PR Review Etiquette"](../AGENTS.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.
> This runbook implements the [GOVERNANCE.md "PR Review Etiquette"](../GOVERNANCE.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.

Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [AGENTS.md -> PR Review Etiquette](../AGENTS.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.
Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [GOVERNANCE.md -> PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.

### Triggering and Polling

Expand DownExpand Up@@ -142,13 +142,13 @@ Issue-level Copilot comments (those in `issues/<N>/comments`) have no resolution
Reply-body conventions:

- Accepted bug/style fix: include fixing commit SHA and a one-line summary.
- Declined style comment: cite the rule (AGENTS.md or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined style comment: cite the rule (AGENTS.md, GOVERNANCE.md, or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined architecture proposal: one-sentence rationale.

After the final push, sweep-resolve stale older threads for removed code paths.

## When in Doubt

Read [AGENTS.md](../AGENTS.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.
Read [AGENTS.md](../AGENTS.md) and [GOVERNANCE.md](../GOVERNANCE.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.

**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [AGENTS.md "Staying in Sync and Reporting Drift Upstream"](https://github.com/ptr727/ProjectTemplate/blob/main/AGENTS.md#staying-in-sync-and-reporting-drift-upstream).
**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [GOVERNANCE.md "Durable Knowledge and Self-Improvement"](https://github.com/ptr727/ProjectTemplate/blob/main/GOVERNANCE.md#durable-knowledge-and-self-improvement).
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub by ptr727 · Pull Request #326 · ptr727/LanguageTags · GitHub
Skip to content
Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub#326

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 Merged

ptr727
merged 7 commits into

from

Aug 29, 2026
 Merged


Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub
#326
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9bf3e0a

Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub


ptr727 Aug 29, 2026
97fdca8

Fix broken links this PR's section move introduced


ptr727 Aug 29, 2026
917508b

Fix two more references stale after the AGENTS.md/GOVERNANCE.md split


ptr727 Aug 29, 2026
31fbcbc

Fix three CodeRabbit-flagged accuracy issues in AGENTS.md/OPERATIONS.md


ptr727 Aug 29, 2026
1dea495

Point the clean-compile command sequence at tasks.json, not CODESTYLE.md


ptr727 Aug 29, 2026
5b8ce01

Fix dead hub link and restore the CI-spelling-scope rationale


ptr727 Aug 29, 2026
b9e970c

Add OPERATIONS.md to AGENTS.md's canonical-document map


ptr727 Aug 29, 2026

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16 changes: 8 additions & 8 deletions
.github/copilot-instructions.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,25 +2,25 @@

Repository conventions for GitHub Copilot (and any other AI agent reading this file).

The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../AGENTS.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.
The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.

For code-style rules, see [`CODESTYLE.md`](../CODESTYLE.md) at the repo root - one guide with a General section and the .NET section.
Comment thread
ptr727 marked this conversation as resolved.


Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` to be provider-independent.
Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` or `GOVERNANCE.md` to be provider-independent.

## Commit Messages and Pull Request Titles

Summarized for VS Code's generators; the full rules, rationale, and examples are in [AGENTS.md "Pull Request Title and Commit Message Conventions"](../AGENTS.md#pull-request-title-and-commit-message-conventions).
Summarized for VS Code's generators; the full rules, rationale, and examples are in [GOVERNANCE.md "Pull Request Title and Commit Message Conventions"](../GOVERNANCE.md#pull-request-title-and-commit-message-conventions).

- Imperative subject, <= 72 characters, no trailing period; optional blank-line-separated body for the non-obvious *why*.
- US English, title case with lowercase short bind words; no vague titles, no `Co-Authored-By:` unless asked, no release-bump magnitude (NBGV handles versioning). Dependabot's `Bump X from Y to Z` titles are fine.
- develop PRs squash-merge (`gh pr merge --squash`), main PRs merge-commit (`--merge`); a mismatched flag is rejected by branch protection.

## GitHub Copilot Review Runbook

> This runbook implements the [AGENTS.md "PR Review Etiquette"](../AGENTS.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.
> This runbook implements the [GOVERNANCE.md "PR Review Etiquette"](../GOVERNANCE.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.

Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [AGENTS.md -> PR Review Etiquette](../AGENTS.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.
Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [GOVERNANCE.md -> PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.

### Triggering and Polling

Expand DownExpand Up@@ -142,13 +142,13 @@ Issue-level Copilot comments (those in `issues/<N>/comments`) have no resolution
Reply-body conventions:

- Accepted bug/style fix: include fixing commit SHA and a one-line summary.
- Declined style comment: cite the rule (AGENTS.md or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined style comment: cite the rule (AGENTS.md, GOVERNANCE.md, or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined architecture proposal: one-sentence rationale.

After the final push, sweep-resolve stale older threads for removed code paths.

## When in Doubt

Read [AGENTS.md](../AGENTS.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.
Read [AGENTS.md](../AGENTS.md) and [GOVERNANCE.md](../GOVERNANCE.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.

**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [AGENTS.md "Staying in Sync and Reporting Drift Upstream"](https://github.com/ptr727/ProjectTemplate/blob/main/AGENTS.md#staying-in-sync-and-reporting-drift-upstream).
**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [GOVERNANCE.md "Durable Knowledge and Self-Improvement"](https://github.com/ptr727/ProjectTemplate/blob/main/GOVERNANCE.md#durable-knowledge-and-self-improvement).
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub by ptr727 · Pull Request #326 · ptr727/LanguageTags · GitHub
Skip to content
Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub#326

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 Merged

ptr727
merged 7 commits into

from

Aug 29, 2026
 Merged


Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub
#326
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9bf3e0a

Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub


ptr727 Aug 29, 2026
97fdca8

Fix broken links this PR's section move introduced


ptr727 Aug 29, 2026
917508b

Fix two more references stale after the AGENTS.md/GOVERNANCE.md split


ptr727 Aug 29, 2026
31fbcbc

Fix three CodeRabbit-flagged accuracy issues in AGENTS.md/OPERATIONS.md


ptr727 Aug 29, 2026
1dea495

Point the clean-compile command sequence at tasks.json, not CODESTYLE.md


ptr727 Aug 29, 2026
5b8ce01

Fix dead hub link and restore the CI-spelling-scope rationale


ptr727 Aug 29, 2026
b9e970c

Add OPERATIONS.md to AGENTS.md's canonical-document map


ptr727 Aug 29, 2026

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16 changes: 8 additions & 8 deletions
.github/copilot-instructions.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,25 +2,25 @@

Repository conventions for GitHub Copilot (and any other AI agent reading this file).

The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../AGENTS.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.
The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.

For code-style rules, see [`CODESTYLE.md`](../CODESTYLE.md) at the repo root - one guide with a General section and the .NET section.
Comment thread
ptr727 marked this conversation as resolved.


Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` to be provider-independent.
Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` or `GOVERNANCE.md` to be provider-independent.

## Commit Messages and Pull Request Titles

Summarized for VS Code's generators; the full rules, rationale, and examples are in [AGENTS.md "Pull Request Title and Commit Message Conventions"](../AGENTS.md#pull-request-title-and-commit-message-conventions).
Summarized for VS Code's generators; the full rules, rationale, and examples are in [GOVERNANCE.md "Pull Request Title and Commit Message Conventions"](../GOVERNANCE.md#pull-request-title-and-commit-message-conventions).

- Imperative subject, <= 72 characters, no trailing period; optional blank-line-separated body for the non-obvious *why*.
- US English, title case with lowercase short bind words; no vague titles, no `Co-Authored-By:` unless asked, no release-bump magnitude (NBGV handles versioning). Dependabot's `Bump X from Y to Z` titles are fine.
- develop PRs squash-merge (`gh pr merge --squash`), main PRs merge-commit (`--merge`); a mismatched flag is rejected by branch protection.

## GitHub Copilot Review Runbook

> This runbook implements the [AGENTS.md "PR Review Etiquette"](../AGENTS.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.
> This runbook implements the [GOVERNANCE.md "PR Review Etiquette"](../GOVERNANCE.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.

Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [AGENTS.md -> PR Review Etiquette](../AGENTS.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.
Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [GOVERNANCE.md -> PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.

### Triggering and Polling

Expand DownExpand Up@@ -142,13 +142,13 @@ Issue-level Copilot comments (those in `issues/<N>/comments`) have no resolution
Reply-body conventions:

- Accepted bug/style fix: include fixing commit SHA and a one-line summary.
- Declined style comment: cite the rule (AGENTS.md or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined style comment: cite the rule (AGENTS.md, GOVERNANCE.md, or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined architecture proposal: one-sentence rationale.

After the final push, sweep-resolve stale older threads for removed code paths.

## When in Doubt

Read [AGENTS.md](../AGENTS.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.
Read [AGENTS.md](../AGENTS.md) and [GOVERNANCE.md](../GOVERNANCE.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.

**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [AGENTS.md "Staying in Sync and Reporting Drift Upstream"](https://github.com/ptr727/ProjectTemplate/blob/main/AGENTS.md#staying-in-sync-and-reporting-drift-upstream).
**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [GOVERNANCE.md "Durable Knowledge and Self-Improvement"](https://github.com/ptr727/ProjectTemplate/blob/main/GOVERNANCE.md#durable-knowledge-and-self-improvement).
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub by ptr727 · Pull Request #326 · ptr727/LanguageTags · GitHub
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub#326

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ptr727
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Aug 29, 2026
 Merged


Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub
#326
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9bf3e0a

Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub


ptr727 Aug 29, 2026
97fdca8

Fix broken links this PR's section move introduced


ptr727 Aug 29, 2026
917508b

Fix two more references stale after the AGENTS.md/GOVERNANCE.md split


ptr727 Aug 29, 2026
31fbcbc

Fix three CodeRabbit-flagged accuracy issues in AGENTS.md/OPERATIONS.md


ptr727 Aug 29, 2026
1dea495

Point the clean-compile command sequence at tasks.json, not CODESTYLE.md


ptr727 Aug 29, 2026
5b8ce01

Fix dead hub link and restore the CI-spelling-scope rationale


ptr727 Aug 29, 2026
b9e970c

Add OPERATIONS.md to AGENTS.md's canonical-document map


ptr727 Aug 29, 2026

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16 changes: 8 additions & 8 deletions
.github/copilot-instructions.md

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Expand Up@@ -2,25 +2,25 @@

Repository conventions for GitHub Copilot (and any other AI agent reading this file).

The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../AGENTS.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.
The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.

For code-style rules, see [`CODESTYLE.md`](../CODESTYLE.md) at the repo root - one guide with a General section and the .NET section.
Comment thread
ptr727 marked this conversation as resolved.


Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` to be provider-independent.
Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` or `GOVERNANCE.md` to be provider-independent.

## Commit Messages and Pull Request Titles

Summarized for VS Code's generators; the full rules, rationale, and examples are in [AGENTS.md "Pull Request Title and Commit Message Conventions"](../AGENTS.md#pull-request-title-and-commit-message-conventions).
Summarized for VS Code's generators; the full rules, rationale, and examples are in [GOVERNANCE.md "Pull Request Title and Commit Message Conventions"](../GOVERNANCE.md#pull-request-title-and-commit-message-conventions).

- Imperative subject, <= 72 characters, no trailing period; optional blank-line-separated body for the non-obvious *why*.
- US English, title case with lowercase short bind words; no vague titles, no `Co-Authored-By:` unless asked, no release-bump magnitude (NBGV handles versioning). Dependabot's `Bump X from Y to Z` titles are fine.
- develop PRs squash-merge (`gh pr merge --squash`), main PRs merge-commit (`--merge`); a mismatched flag is rejected by branch protection.

## GitHub Copilot Review Runbook

> This runbook implements the [AGENTS.md "PR Review Etiquette"](../AGENTS.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.
> This runbook implements the [GOVERNANCE.md "PR Review Etiquette"](../GOVERNANCE.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.

Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [AGENTS.md -> PR Review Etiquette](../AGENTS.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.
Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [GOVERNANCE.md -> PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.

### Triggering and Polling

Expand DownExpand Up@@ -142,13 +142,13 @@ Issue-level Copilot comments (those in `issues/<N>/comments`) have no resolution
Reply-body conventions:

- Accepted bug/style fix: include fixing commit SHA and a one-line summary.
- Declined style comment: cite the rule (AGENTS.md or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined style comment: cite the rule (AGENTS.md, GOVERNANCE.md, or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined architecture proposal: one-sentence rationale.

After the final push, sweep-resolve stale older threads for removed code paths.

## When in Doubt

Read [AGENTS.md](../AGENTS.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.
Read [AGENTS.md](../AGENTS.md) and [GOVERNANCE.md](../GOVERNANCE.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.

**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [AGENTS.md "Staying in Sync and Reporting Drift Upstream"](https://github.com/ptr727/ProjectTemplate/blob/main/AGENTS.md#staying-in-sync-and-reporting-drift-upstream).
**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [GOVERNANCE.md "Durable Knowledge and Self-Improvement"](https://github.com/ptr727/ProjectTemplate/blob/main/GOVERNANCE.md#durable-knowledge-and-self-improvement).
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub by ptr727 · Pull Request #326 · ptr727/LanguageTags · GitHub
Skip to content
Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub#326

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 Merged

ptr727
merged 7 commits into

from

Aug 29, 2026
 Merged


Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub
#326
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9bf3e0a

Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub


ptr727 Aug 29, 2026
97fdca8

Fix broken links this PR's section move introduced


ptr727 Aug 29, 2026
917508b

Fix two more references stale after the AGENTS.md/GOVERNANCE.md split


ptr727 Aug 29, 2026
31fbcbc

Fix three CodeRabbit-flagged accuracy issues in AGENTS.md/OPERATIONS.md


ptr727 Aug 29, 2026
1dea495

Point the clean-compile command sequence at tasks.json, not CODESTYLE.md


ptr727 Aug 29, 2026
5b8ce01

Fix dead hub link and restore the CI-spelling-scope rationale


ptr727 Aug 29, 2026
b9e970c

Add OPERATIONS.md to AGENTS.md's canonical-document map


ptr727 Aug 29, 2026

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16 changes: 8 additions & 8 deletions
.github/copilot-instructions.md

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,25 +2,25 @@

Repository conventions for GitHub Copilot (and any other AI agent reading this file).

The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../AGENTS.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.
The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.

For code-style rules, see [`CODESTYLE.md`](../CODESTYLE.md) at the repo root - one guide with a General section and the .NET section.
Comment thread
ptr727 marked this conversation as resolved.


Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` to be provider-independent.
Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` or `GOVERNANCE.md` to be provider-independent.

## Commit Messages and Pull Request Titles

Summarized for VS Code's generators; the full rules, rationale, and examples are in [AGENTS.md "Pull Request Title and Commit Message Conventions"](../AGENTS.md#pull-request-title-and-commit-message-conventions).
Summarized for VS Code's generators; the full rules, rationale, and examples are in [GOVERNANCE.md "Pull Request Title and Commit Message Conventions"](../GOVERNANCE.md#pull-request-title-and-commit-message-conventions).

- Imperative subject, <= 72 characters, no trailing period; optional blank-line-separated body for the non-obvious *why*.
- US English, title case with lowercase short bind words; no vague titles, no `Co-Authored-By:` unless asked, no release-bump magnitude (NBGV handles versioning). Dependabot's `Bump X from Y to Z` titles are fine.
- develop PRs squash-merge (`gh pr merge --squash`), main PRs merge-commit (`--merge`); a mismatched flag is rejected by branch protection.

## GitHub Copilot Review Runbook

> This runbook implements the [AGENTS.md "PR Review Etiquette"](../AGENTS.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.
> This runbook implements the [GOVERNANCE.md "PR Review Etiquette"](../GOVERNANCE.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.

Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [AGENTS.md -> PR Review Etiquette](../AGENTS.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.
Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [GOVERNANCE.md -> PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.

### Triggering and Polling

Expand DownExpand Up@@ -142,13 +142,13 @@ Issue-level Copilot comments (those in `issues/<N>/comments`) have no resolution
Reply-body conventions:

- Accepted bug/style fix: include fixing commit SHA and a one-line summary.
- Declined style comment: cite the rule (AGENTS.md or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined style comment: cite the rule (AGENTS.md, GOVERNANCE.md, or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined architecture proposal: one-sentence rationale.

After the final push, sweep-resolve stale older threads for removed code paths.

## When in Doubt

Read [AGENTS.md](../AGENTS.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.
Read [AGENTS.md](../AGENTS.md) and [GOVERNANCE.md](../GOVERNANCE.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.

**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [AGENTS.md "Staying in Sync and Reporting Drift Upstream"](https://github.com/ptr727/ProjectTemplate/blob/main/AGENTS.md#staying-in-sync-and-reporting-drift-upstream).
**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [GOVERNANCE.md "Durable Knowledge and Self-Improvement"](https://github.com/ptr727/ProjectTemplate/blob/main/GOVERNANCE.md#durable-knowledge-and-self-improvement).
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// Auto-enable theater mode on YouTube
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function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
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var __re = new RegExp('^' + ".*" + '
Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub by ptr727 · Pull Request #326 · ptr727/LanguageTags · GitHub
Skip to content
Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub#326

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 Merged

ptr727
merged 7 commits into

from

Aug 29, 2026
 Merged


Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub
#326
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9bf3e0a

Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub


ptr727 Aug 29, 2026
97fdca8

Fix broken links this PR's section move introduced


ptr727 Aug 29, 2026
917508b

Fix two more references stale after the AGENTS.md/GOVERNANCE.md split


ptr727 Aug 29, 2026
31fbcbc

Fix three CodeRabbit-flagged accuracy issues in AGENTS.md/OPERATIONS.md


ptr727 Aug 29, 2026
1dea495

Point the clean-compile command sequence at tasks.json, not CODESTYLE.md


ptr727 Aug 29, 2026
5b8ce01

Fix dead hub link and restore the CI-spelling-scope rationale


ptr727 Aug 29, 2026
b9e970c

Add OPERATIONS.md to AGENTS.md's canonical-document map


ptr727 Aug 29, 2026

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16 changes: 8 additions & 8 deletions
.github/copilot-instructions.md

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,25 +2,25 @@

Repository conventions for GitHub Copilot (and any other AI agent reading this file).

The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../AGENTS.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.
The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.

For code-style rules, see [`CODESTYLE.md`](../CODESTYLE.md) at the repo root - one guide with a General section and the .NET section.
Comment thread
ptr727 marked this conversation as resolved.


Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` to be provider-independent.
Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` or `GOVERNANCE.md` to be provider-independent.

## Commit Messages and Pull Request Titles

Summarized for VS Code's generators; the full rules, rationale, and examples are in [AGENTS.md "Pull Request Title and Commit Message Conventions"](../AGENTS.md#pull-request-title-and-commit-message-conventions).
Summarized for VS Code's generators; the full rules, rationale, and examples are in [GOVERNANCE.md "Pull Request Title and Commit Message Conventions"](../GOVERNANCE.md#pull-request-title-and-commit-message-conventions).

- Imperative subject, <= 72 characters, no trailing period; optional blank-line-separated body for the non-obvious *why*.
- US English, title case with lowercase short bind words; no vague titles, no `Co-Authored-By:` unless asked, no release-bump magnitude (NBGV handles versioning). Dependabot's `Bump X from Y to Z` titles are fine.
- develop PRs squash-merge (`gh pr merge --squash`), main PRs merge-commit (`--merge`); a mismatched flag is rejected by branch protection.

## GitHub Copilot Review Runbook

> This runbook implements the [AGENTS.md "PR Review Etiquette"](../AGENTS.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.
> This runbook implements the [GOVERNANCE.md "PR Review Etiquette"](../GOVERNANCE.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.

Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [AGENTS.md -> PR Review Etiquette](../AGENTS.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.
Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [GOVERNANCE.md -> PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.

### Triggering and Polling

Expand DownExpand Up@@ -142,13 +142,13 @@ Issue-level Copilot comments (those in `issues/<N>/comments`) have no resolution
Reply-body conventions:

- Accepted bug/style fix: include fixing commit SHA and a one-line summary.
- Declined style comment: cite the rule (AGENTS.md or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined style comment: cite the rule (AGENTS.md, GOVERNANCE.md, or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined architecture proposal: one-sentence rationale.

After the final push, sweep-resolve stale older threads for removed code paths.

## When in Doubt

Read [AGENTS.md](../AGENTS.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.
Read [AGENTS.md](../AGENTS.md) and [GOVERNANCE.md](../GOVERNANCE.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.

**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [AGENTS.md "Staying in Sync and Reporting Drift Upstream"](https://github.com/ptr727/ProjectTemplate/blob/main/AGENTS.md#staying-in-sync-and-reporting-drift-upstream).
**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [GOVERNANCE.md "Durable Knowledge and Self-Improvement"](https://github.com/ptr727/ProjectTemplate/blob/main/GOVERNANCE.md#durable-knowledge-and-self-improvement).
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub by ptr727 · Pull Request #326 · ptr727/LanguageTags · GitHub
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub#326

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Aug 29, 2026
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub
#326
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9bf3e0a

Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub


ptr727 Aug 29, 2026
97fdca8

Fix broken links this PR's section move introduced


ptr727 Aug 29, 2026
917508b

Fix two more references stale after the AGENTS.md/GOVERNANCE.md split


ptr727 Aug 29, 2026
31fbcbc

Fix three CodeRabbit-flagged accuracy issues in AGENTS.md/OPERATIONS.md


ptr727 Aug 29, 2026
1dea495

Point the clean-compile command sequence at tasks.json, not CODESTYLE.md


ptr727 Aug 29, 2026
5b8ce01

Fix dead hub link and restore the CI-spelling-scope rationale


ptr727 Aug 29, 2026
b9e970c

Add OPERATIONS.md to AGENTS.md's canonical-document map


ptr727 Aug 29, 2026

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16 changes: 8 additions & 8 deletions
.github/copilot-instructions.md

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Expand Up@@ -2,25 +2,25 @@

Repository conventions for GitHub Copilot (and any other AI agent reading this file).

The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../AGENTS.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.
The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.

For code-style rules, see [`CODESTYLE.md`](../CODESTYLE.md) at the repo root - one guide with a General section and the .NET section.
Comment thread
ptr727 marked this conversation as resolved.


Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` to be provider-independent.
Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` or `GOVERNANCE.md` to be provider-independent.

## Commit Messages and Pull Request Titles

Summarized for VS Code's generators; the full rules, rationale, and examples are in [AGENTS.md "Pull Request Title and Commit Message Conventions"](../AGENTS.md#pull-request-title-and-commit-message-conventions).
Summarized for VS Code's generators; the full rules, rationale, and examples are in [GOVERNANCE.md "Pull Request Title and Commit Message Conventions"](../GOVERNANCE.md#pull-request-title-and-commit-message-conventions).

- Imperative subject, <= 72 characters, no trailing period; optional blank-line-separated body for the non-obvious *why*.
- US English, title case with lowercase short bind words; no vague titles, no `Co-Authored-By:` unless asked, no release-bump magnitude (NBGV handles versioning). Dependabot's `Bump X from Y to Z` titles are fine.
- develop PRs squash-merge (`gh pr merge --squash`), main PRs merge-commit (`--merge`); a mismatched flag is rejected by branch protection.

## GitHub Copilot Review Runbook

> This runbook implements the [AGENTS.md "PR Review Etiquette"](../AGENTS.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.
> This runbook implements the [GOVERNANCE.md "PR Review Etiquette"](../GOVERNANCE.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.

Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [AGENTS.md -> PR Review Etiquette](../AGENTS.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.
Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [GOVERNANCE.md -> PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.

### Triggering and Polling

Expand DownExpand Up@@ -142,13 +142,13 @@ Issue-level Copilot comments (those in `issues/<N>/comments`) have no resolution
Reply-body conventions:

- Accepted bug/style fix: include fixing commit SHA and a one-line summary.
- Declined style comment: cite the rule (AGENTS.md or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined style comment: cite the rule (AGENTS.md, GOVERNANCE.md, or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined architecture proposal: one-sentence rationale.

After the final push, sweep-resolve stale older threads for removed code paths.

## When in Doubt

Read [AGENTS.md](../AGENTS.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.
Read [AGENTS.md](../AGENTS.md) and [GOVERNANCE.md](../GOVERNANCE.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.

**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [AGENTS.md "Staying in Sync and Reporting Drift Upstream"](https://github.com/ptr727/ProjectTemplate/blob/main/AGENTS.md#staying-in-sync-and-reporting-drift-upstream).
**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [GOVERNANCE.md "Durable Knowledge and Self-Improvement"](https://github.com/ptr727/ProjectTemplate/blob/main/GOVERNANCE.md#durable-knowledge-and-self-improvement).
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Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub by ptr727 · Pull Request #326 · ptr727/LanguageTags · GitHub
Skip to content
Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub#326

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 Merged

ptr727
merged 7 commits into

from

Aug 29, 2026
 Merged


Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub
#326
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9bf3e0a

Split AGENTS.md into AGENTS.md and GOVERNANCE.md per the hub


ptr727 Aug 29, 2026
97fdca8

Fix broken links this PR's section move introduced


ptr727 Aug 29, 2026
917508b

Fix two more references stale after the AGENTS.md/GOVERNANCE.md split


ptr727 Aug 29, 2026
31fbcbc

Fix three CodeRabbit-flagged accuracy issues in AGENTS.md/OPERATIONS.md


ptr727 Aug 29, 2026
1dea495

Point the clean-compile command sequence at tasks.json, not CODESTYLE.md


ptr727 Aug 29, 2026
5b8ce01

Fix dead hub link and restore the CI-spelling-scope rationale


ptr727 Aug 29, 2026
b9e970c

Add OPERATIONS.md to AGENTS.md's canonical-document map


ptr727 Aug 29, 2026

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16 changes: 8 additions & 8 deletions
.github/copilot-instructions.md

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,25 +2,25 @@

Repository conventions for GitHub Copilot (and any other AI agent reading this file).

The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../AGENTS.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.
The **canonical guide is [AGENTS.md](../AGENTS.md)** at the repo root - read it first, including the [PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette) review-loop contract this file's runbook implements. This file is intentionally narrow: commit/PR-title conventions (summarized inline so VS Code's commit-message and PR-title generators have them) plus the GitHub Copilot Review Runbook.

For code-style rules, see [`CODESTYLE.md`](../CODESTYLE.md) at the repo root - one guide with a General section and the .NET section.
Comment thread
ptr727 marked this conversation as resolved.


Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` to be provider-independent.
Do not duplicate language-specific rules here. **Project-specific conventions and API/behavioral contracts also belong in [AGENTS.md](../AGENTS.md), not here** - this file is intentionally limited to the inline commit/PR-title summary and the GitHub Copilot Review Runbook. Non-Copilot agents (Claude Code, Codex, Cursor, ...) are not directed to this file and don't read it by default, so any rule a reviewer must honor has to live in `AGENTS.md` or `GOVERNANCE.md` to be provider-independent.

## Commit Messages and Pull Request Titles

Summarized for VS Code's generators; the full rules, rationale, and examples are in [AGENTS.md "Pull Request Title and Commit Message Conventions"](../AGENTS.md#pull-request-title-and-commit-message-conventions).
Summarized for VS Code's generators; the full rules, rationale, and examples are in [GOVERNANCE.md "Pull Request Title and Commit Message Conventions"](../GOVERNANCE.md#pull-request-title-and-commit-message-conventions).

- Imperative subject, <= 72 characters, no trailing period; optional blank-line-separated body for the non-obvious *why*.
- US English, title case with lowercase short bind words; no vague titles, no `Co-Authored-By:` unless asked, no release-bump magnitude (NBGV handles versioning). Dependabot's `Bump X from Y to Z` titles are fine.
- develop PRs squash-merge (`gh pr merge --squash`), main PRs merge-commit (`--merge`); a mismatched flag is rejected by branch protection.

## GitHub Copilot Review Runbook

> This runbook implements the [AGENTS.md "PR Review Etiquette"](../AGENTS.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.
> This runbook implements the [GOVERNANCE.md "PR Review Etiquette"](../GOVERNANCE.md#pr-review-etiquette) review-loop contract for GitHub Copilot. Without it in-repo, an agent has no pointer to the reliable Copilot mechanics and falls back to known-broken paths (the no-op `POST /requested_reviewers`, the wrong bot-login filter). In the API snippets below, `<N>` is the PR number.

Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [AGENTS.md -> PR Review Etiquette](../AGENTS.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.
Use this section for provider-specific mechanics. The expected review loop *contract* (request review on every push, verify head-SHA coverage, triage findings, reply + resolve, escalate when stuck) is defined in [GOVERNANCE.md -> PR Review Etiquette](../GOVERNANCE.md#pr-review-etiquette). This section only describes how to make GitHub Copilot reliably execute it.

### Triggering and Polling

Expand DownExpand Up@@ -142,13 +142,13 @@ Issue-level Copilot comments (those in `issues/<N>/comments`) have no resolution
Reply-body conventions:

- Accepted bug/style fix: include fixing commit SHA and a one-line summary.
- Declined style comment: cite the rule (AGENTS.md or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined style comment: cite the rule (AGENTS.md, GOVERNANCE.md, or the CODESTYLE.md .NET section) and the existing-tree precedent.
- Declined architecture proposal: one-sentence rationale.

After the final push, sweep-resolve stale older threads for removed code paths.

## When in Doubt

Read [AGENTS.md](../AGENTS.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.
Read [AGENTS.md](../AGENTS.md) and [GOVERNANCE.md](../GOVERNANCE.md) for this repo's conventions. For code-style rules, [`CODESTYLE.md`](../CODESTYLE.md) (its General and .NET sections) is authoritative. Don't restate any of these files' rules in commit bodies or PR descriptions - keep those focused on the change itself.

**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [AGENTS.md "Staying in Sync and Reporting Drift Upstream"](https://github.com/ptr727/ProjectTemplate/blob/main/AGENTS.md#staying-in-sync-and-reporting-drift-upstream).
**In a derived repo:** if you find a discrepancy that should be fixed in the template itself (this file or AGENTS.md is out of date, a rule is missing, something bit this repo and would bite the next), open an issue upstream in [`ptr727/ProjectTemplate`](https://github.com/ptr727/ProjectTemplate) rather than only fixing it locally - see the template's [GOVERNANCE.md "Durable Knowledge and Self-Improvement"](https://github.com/ptr727/ProjectTemplate/blob/main/GOVERNANCE.md#durable-knowledge-and-self-improvement).
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