chore: update devcontainer config

[thephez]

Summary

• Replace unused JSHint feature with ESLint, Prettier, and DotENV extensions matching the project's actual tooling
• Switch npm install to npm ci for deterministic installs aligned with CI
• Auto-create .env from .env.example on first container launch (cp -n)
• Add VS Code settings (default formatter, tab size, EOL normalization)
• Run as non-root node user to prevent file permission issues
• Display a welcome message with next steps on container start
• Add "Quick Start with Dev Containers" section to README with Open in Codespaces badge

Summary by CodeRabbit

• Documentation

  • Added a Quick Start guide for Codespaces/VS Code Dev Containers with setup steps (first-launch install, create .env from example, generate a wallet mnemonic) and a badge linking to Codespaces.
  • Added a welcome/next-steps message displayed on container attach.

• Chores

  • Updated dev container configuration: renamed container to "Dash Platform Tutorials", automated setup commands, and preconfigured VS Code extensions and editor settings.

[coderabbitai]

📝 Walkthrough

Walkthrough

Dev container configuration updated for "Dash Platform Tutorials" with lifecycle commands, VS Code extensions, and editor settings. README gains a "Quick Start with Dev Containers" section describing Codespaces/Dev Containers setup and initial steps. A new .devcontainer/welcome.sh script prints a welcome and next-steps message.

Changes

Cohort / File(s)	Summary
Dev Container Configuration ​.devcontainer/devcontainer.json	Renamed container to "Dash Platform Tutorials"; set remoteUser: "node"; replaced forwardPorts and old postCreateCommand with onCreateCommand: cp -n .env.example .env, postCreateCommand: npm ci, postAttachCommand: .devcontainer/welcome.sh; added VS Code extensions and editor settings; removed older comments and reorganized structure.
Dev Container Welcome Script ​.devcontainer/welcome.sh	Added POSIX shell script that prints a welcome message and brief next steps (verification, wallet creation, env var note, docs link, tutorial pointer).
Quick Start Documentation README.md	Added "Quick Start with Dev Containers" section and Codespaces badge; documents the pre-configured environment, first-launch steps (create .env from .env.example, run npm ci), running node create-wallet.mjs to generate a mnemonic, and setting PLATFORM_MNEMONIC in .env to start tutorials.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰✨ In a cozy dev burrow, configs aligned,
Node boots, extensions hum, and envs are defined.
A welcome script chirps next steps to begin,
Hop in Codespaces—let the tutorials spin!
— Your Friendly CodeRabbit 🥕

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title 'chore: update devcontainer config' is partially related to the changeset. While it accurately describes updates to devcontainer.json, it omits significant changes: a new welcome.sh script, README additions with Codespaces setup instructions, and tooling configuration—making the title incomplete.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch chore/devcontainer-update-2026-03

📝 Coding Plan

• Generate coding plan for human review comments

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[thephez]

@coderabbitai review

[coderabbitai]

✅ Actions performed

Review triggered.

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[coderabbitai]

🧹 Nitpick comments (1)

.devcontainer/welcome.sh (1)

2-2: Optional: switch to heredoc for easier maintenance.

Current output is correct, but a heredoc is easier to update and review than a long escaped printf string.

♻️ Proposed readability refactor

-printf '\n=== Dash Platform Tutorials ===\n\nNext steps:\n  1. Verify connection: node connect.mjs\n  2. Create a wallet:   node create-wallet.mjs\n  3. Edit .env with your mnemonic (PLATFORM_MNEMONIC)\n  4. Start tutorials in 1-Identities-and-Names/\n\nDocs: https://docs.dash.org/projects/platform/en/stable/docs/tutorials/introduction.html\n\n'
+cat <<'EOF'
+
+=== Dash Platform Tutorials ===
+
+Next steps:
+  1. Verify connection: node connect.mjs
+  2. Create a wallet:   node create-wallet.mjs
+  3. Edit .env with your mnemonic (PLATFORM_MNEMONIC)
+  4. Start tutorials in 1-Identities-and-Names/
+
+Docs: https://docs.dash.org/projects/platform/en/stable/docs/tutorials/introduction.html
+
+EOF

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In @.devcontainer/welcome.sh at line 2, Replace the long escaped printf string
in .devcontainer/welcome.sh with a heredoc for readability and easier
maintenance: locate the printf invocation in the script and change it to a
here-doc style output (e.g., use cat <<'EOF' ... EOF) so the multi-line message
is written verbatim without escapes, preserving the exact content and line
breaks.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In @.devcontainer/welcome.sh:
- Line 2: Replace the long escaped printf string in .devcontainer/welcome.sh
with a heredoc for readability and easier maintenance: locate the printf
invocation in the script and change it to a here-doc style output (e.g., use cat
<<'EOF' ... EOF) so the multi-line message is written verbatim without escapes,
preserving the exact content and line breaks.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 10bdcb83-8f28-4258-841c-d312a347789e

📥 Commits

Reviewing files that changed from the base of the PR and between f2f2244 and 0c2bd9a.

📒 Files selected for processing (2)

• .devcontainer/devcontainer.json
• .devcontainer/welcome.sh

🚧 Files skipped from review as they are similar to previous changes (1)

• .devcontainer/devcontainer.json