docs: add community health files and package metadata

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug report
+description: Something is not working as documented
+labels: ['bug']
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for filing a bug. This library uses YouTube's unofficial Innertube
+        API, so behavior often varies by video, language, and region — the more
+        specific you can be, the faster this gets fixed.
+
+        If this is a security vulnerability, please **do not** file it here. See
+        [SECURITY.md](https://github.com/ericmmartin/youtube-transcript-plus/blob/main/SECURITY.md).
+
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What happened?
+      description: What did you expect to happen, and what happened instead?
+    validations:
+      required: true
+
+  - type: input
+    id: video-id
+    attributes:
+      label: Video ID or URL
+      description: >-
+        If the video is public, this is the single most useful thing you can
+        provide. Leave blank if the video is private or unlisted.
+      placeholder: dQw4w9WgXcQ
+    validations:
+      required: false
+
+  - type: textarea
+    id: repro
+    attributes:
+      label: Reproduction
+      description: A minimal code sample, including the config you passed.
+      render: javascript
+      placeholder: |
+        import { fetchTranscript } from 'youtube-transcript-plus';
+
+        await fetchTranscript('dQw4w9WgXcQ', { lang: 'en' });
+    validations:
+      required: true
+
+  - type: textarea
+    id: error
+    attributes:
+      label: Error output
+      description: The full error, including the error class name and stack trace.
+      render: shell
+    validations:
+      required: false
+
+  - type: input
+    id: package-version
+    attributes:
+      label: youtube-transcript-plus version
+      placeholder: 2.0.1
+    validations:
+      required: true
+
+  - type: input
+    id: node-version
+    attributes:
+      label: Node.js version
+      placeholder: v22.11.0
+    validations:
+      required: true
+
+  - type: dropdown
+    id: environment
+    attributes:
+      label: Environment
+      options:
+        - Local development
+        - Server / container
+        - Serverless (Lambda, Vercel, Cloudflare, etc.)
+        - CI
+        - Other
+    validations:
+      required: false
+
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Checks
+      options:
+        - label: I am using a supported Node.js version (>= 20)
+          required: true
+        - label: I searched existing issues for a duplicate
+          required: true
+        - label: >-
+            I confirmed the transcript is actually available for this video on
+            youtube.com (transcripts can be disabled by the uploader)
+          required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Report a security vulnerability
+    url: https://github.com/ericmmartin/youtube-transcript-plus/security/advisories/new
+    about: Please report vulnerabilities privately, not as a public issue.

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature request
+description: Suggest a new capability or improvement
+labels: ['enhancement']
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: What problem are you trying to solve?
+      description: >-
+        Describe the use case rather than the implementation. What are you
+        building, and where does the library get in your way today?
+    validations:
+      required: true
+
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposed solution
+      description: >-
+        If you have an API in mind, sketch it here — a config option, a new
+        exported function, a new formatter, etc.
+      render: typescript
+    validations:
+      required: false
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives considered
+      description: >-
+        Have you worked around this already, for example with a custom
+        `transcriptFetch` or a custom `CacheStrategy`?
+    validations:
+      required: false
+
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Checks
+      options:
+        - label: I searched existing issues for a duplicate
+          required: true
+        - label: I would be willing to open a pull request for this
+          required: false

.github/PULL_REQUEST_TEMPLATE.md

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+<!--
+Thanks for contributing! Please read CONTRIBUTING.md if you haven't already.
+Keep the change focused — one logical change per pull request.
+-->
+
+## What does this change?
+
+<!-- A short description of the change and why it's needed. -->
+
+Closes #
+
+## Type of change
+
+- [ ] Bug fix (non-breaking change that fixes an issue)
+- [ ] New feature (non-breaking change that adds functionality)
+- [ ] Breaking change (fix or feature that changes existing public API)
+- [ ] Documentation only
+- [ ] Chore / dependencies / tooling
+
+## How was this tested?
+
+<!--
+Describe the tests you added or the manual verification you did. If this fixes
+a bug, ideally there is a test that fails before the change and passes after.
+Remember: tests must mock HTTP with nock, not call YouTube for real.
+-->
+
+## Checklist
+
+- [ ] `npm run lint` passes
+- [ ] `npm run typecheck` passes
+- [ ] `npm run build` passes
+- [ ] `npm test` passes
+- [ ] Tests added or updated for this change
+- [ ] README updated if public API or config options changed
+- [ ] Commit messages follow [Conventional Commits](https://www.conventionalcommits.org/)

CODE_OF_CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, caste, color, religion, or sexual
+identity and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+- Focusing on what is best not just for us as individuals, but for the overall
+  community
+
+Examples of unacceptable behavior include:
+
+- The use of sexualized language or imagery, and sexual attention or advances of
+  any kind
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or email address,
+  without their explicit permission
+- Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official email address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+[eric@ericmmartin.com](mailto:eric@ericmmartin.com).
+
+All complaints will be reviewed and investigated promptly and fairly. All
+community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series of
+actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or permanent
+ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior, harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within the
+community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.1, available at
+https://www.contributor-covenant.org/version/2/1/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by
+[Mozilla's code of conduct enforcement ladder][mozilla].
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.
+
+[homepage]: https://www.contributor-covenant.org
+[mozilla]: https://github.com/mozilla/diversity