diff --git a/.gitignore b/.gitignore
index ab69562..af6a0f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ __pycache__/
 *.py[cod]
 .DS_Store
 .vscode/
+dist/
diff --git a/README.md b/README.md
index 0ffa7fc..fb052c9 100644
--- a/README.md
+++ b/README.md
@@ -113,8 +113,9 @@ for foreground-app time or application launches. The skill can provide a
 clearly labeled limited-evidence report but will not invent time totals.
 
 See [PRIVACY.md](PRIVACY.md) for the data-handling rules and
-[CONTRIBUTING.md](CONTRIBUTING.md) for development checks. Planned improvements
-are listed in [ROADMAP.md](ROADMAP.md). Maintainers can reuse the
+[CONTRIBUTING.md](CONTRIBUTING.md) for development checks, and
+[SUPPORT.md](SUPPORT.md) for safe support requests. Planned improvements are
+listed in [ROADMAP.md](ROADMAP.md). Maintainers can reuse the
 [launch kit](PROMOTION.md) for privacy-accurate project announcements. Public
 product updates are recorded in [docs/CHANGELOG.md](docs/CHANGELOG.md).
 
diff --git a/SUPPORT.md b/SUPPORT.md
new file mode 100644
index 0000000..85be979
--- /dev/null
+++ b/SUPPORT.md
@@ -0,0 +1,12 @@
+# Support
+
+Use the project's [GitHub Issues](https://github.com/liuyewang/computer-usage-summary-skill/issues/new/choose)
+for installation, compatibility, and reporting questions.
+
+Before opening an issue, remove all ActivityWatch exports, window titles, URLs,
+account names, local paths, screenshots with private content, and access tokens.
+For suspected security or privacy vulnerabilities, follow
+[SECURITY.md](SECURITY.md) instead of opening a public issue.
+
+The project is maintained on a best-effort basis. It does not provide managed
+hosting, account support, cloud synchronization, or data recovery.
diff --git a/docs/OPENAI_SUBMISSION.md b/docs/OPENAI_SUBMISSION.md
new file mode 100644
index 0000000..7f6d26a
--- /dev/null
+++ b/docs/OPENAI_SUBMISSION.md
@@ -0,0 +1,66 @@
+# OpenAI Plugin Submission Notes
+
+This document is the reviewer-ready source for a **skills-only** submission to
+the OpenAI Plugins Directory. It contains no user activity data.
+
+## Listing
+
+| Field | Value |
+| --- | --- |
+| Plugin name | Computer Usage Summary |
+| Publisher | liuyewang (individual identity; verify in the OpenAI Platform before submission) |
+| Category | Productivity |
+| Short description | Private local ActivityWatch summaries |
+| Website | https://liuyewang.github.io/computer-usage-summary-skill/ |
+| Support | https://github.com/liuyewang/computer-usage-summary-skill/blob/main/SUPPORT.md |
+| Privacy policy | https://github.com/liuyewang/computer-usage-summary-skill/blob/main/PRIVACY.md |
+| Terms | https://github.com/liuyewang/computer-usage-summary-skill/blob/main/LICENSE |
+| Availability | Global |
+| Authentication | None |
+| MCP server | None |
+
+## Release Notes
+
+Initial public skills-only submission. Computer Usage Summary converts local
+ActivityWatch records into app, AFK, project, category, billable-time, and
+sanitized timeline reports. It supports macOS, Windows, and Linux. The plugin
+does not require an account, browser extension, cloud sync, telemetry, or a
+network service beyond the user's local ActivityWatch API. URLs are removed
+before reports are created.
+
+## Starter Prompts
+
+1. Summarize what I did on my computer today.
+2. Create a paste-ready table of my app usage this week.
+3. Show a private timeline of my local computer activity.
+
+## Positive Test Cases
+
+Use the repository's fixed synthetic ActivityWatch sample and run
+`python3 -m unittest discover -s tests -v` before submission. The test suite
+does not connect to a real ActivityWatch instance.
+
+| Prompt or scenario | Expected behavior |
+| --- | --- |
+| Summarize local activity for one day with ActivityWatch running. | Returns confirmed active and AFK totals plus foreground-app sessions from the local API. |
+| Create a weekly project report with a local rules JSON file. | Maps sanitized app/title context to project, client, category, and billable totals; first rule wins. |
+| Export an app report as TSV. | Produces paste-ready columns and escapes spreadsheet formula-like cells. |
+| Export a timeline as CSV with `--csv-bom --hide-titles`. | Produces a UTF-8-BOM CSV and replaces every title with `[Title hidden]`. |
+| Request the monthly app-trend report. | Produces local-date trend rows with active, AFK, and billable time. |
+
+## Negative Test Cases
+
+| Prompt or scenario | Expected safe behavior |
+| --- | --- |
+| Request a historical report when the local ActivityWatch API is unavailable. | Marks duration and session fields unavailable with a structured local-source reason; does not invent totals. |
+| Request a report when the required ActivityWatch buckets are missing. | Returns an unavailable result identifying the missing local source. |
+| Provide malformed local attribution rules. | Rejects the rules configuration without exporting, uploading, or changing user data. |
+
+## Reviewer Notes
+
+- Upload the generated skills-only ZIP from `dist/`; it contains the final
+  installable plugin tree only.
+- The repository's tests and fixtures are separate from the uploaded plugin
+  tree so reviewers can inspect them without installing test-only content.
+- The plugin has no credentials, account flows, MCP tools, UI, or external
+  endpoint. Its default API endpoint is `http://127.0.0.1:5600/api/0`.