fix: address WordPress.org plugin review feedback

[josephfusco]

Addresses WordPress.org pre-review feedback for presence-api.

• readme.txt: fix Contributors slug (flavor → joefusco), sync changelog with CHANGELOG.md, add Text Domain header.
• includes/post-list.php: enqueue the Editors column CSS via wp_add_inline_style (gated on edit.php) instead of an inline <style> tag.
• presence-api.php: remove redundant load_plugin_textdomain(); guard the WP_DEBUG-only debug-tool requires with file_exists() and their hooks with function_exists().
• .distignore: exclude db-viewer.php and debugger-widget.php from the release build.

Naming (wp_/WP_ prefixes, wp-presence/v1, plugin name/slug) is unchanged and handled in a separate reply to the review team.

Verified: PHPCS + PHPStan clean; simulated dist build ships no debug tools and no inline <script>/<style>.

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AI disclosure: this PR was prepared with AI assistance (Claude Code).

[github-actions]

▶ Preview in WordPress Playground

Boots a fresh WordPress with this PR's presence-api build, seeds 5 demo users, and drops you on the dashboard.

_{Stress-test variant: 40 demo users · Built from 0801410bcdee472f141eb4e48609d2d26a94c84d. Auto-updates when you push.}

[Copilot]

Pull request overview

This PR addresses WordPress.org plugin pre-review feedback by aligning the plugin’s packaging/docs with directory expectations and by replacing direct inline CSS output with WordPress enqueue APIs, while ensuring dev-only tooling won’t break distributed builds.

Changes:

• Updates readme.txt metadata (Contributors, Text Domain) and expands the changelog section.
• Switches post-list “Editors” column styling to wp_add_inline_style() on admin_enqueue_scripts (scoped to edit.php).
• Makes WP_DEBUG developer tooling includes resilient to missing files and updates release packaging exclusions in .distignore.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
readme.txt	Updates plugin readme headers and changelog content for WP.org submission.
presence-api.php	Guards dev-tool includes and updates hook registration for debug widget functions.
includes/post-list.php	Moves Editors column CSS from raw <style> output to enqueued inline styles on edit.php.
.distignore	Excludes debug tooling PHP files from distributed builds.

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[github-actions]

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Core Committers: Use this line as a base for the props when committing in SVN:

Props joefusco.

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