fix: prevent linked notes from being overwritten with old state

[VariableThe]

Fixes a bug where opening a new note via an internal link, the search bar, or back navigation would cause the newly opened note to be overwritten by the contents of the previous note.

Added a key prop tied to activeNote.id to the CodeMirror component to ensure it fully remounts when changing notes, discarding stale state.

Summary by CodeRabbit

• Documentation

  • Added project philosophy document outlining design principles, engineering practices, and core development values
  • Updated README with introductory section explaining the project's mission and commitment to performance, privacy, and user autonomy

• Bug Fixes

  • Fixed editor state to properly reset when switching between notes, ensuring clean state transitions across editing sessions

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: c2dd652e-b959-41cd-8ead-5ecbed931cda

📥 Commits

Reviewing files that changed from the base of the PR and between b1883cc and 2d3e148.

📒 Files selected for processing (3)

• PHILOSOPHY.md
• README.md
• src/components/Editor.tsx

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📝 Walkthrough

Walkthrough

Adds PHILOSOPHY.md documenting the project's eight guiding principles and a closing statement. Updates README.md with a blockquote intro linking to that philosophy. Separately, adds key={activeNote.id} to the CodeMirror component in Editor.tsx so the editor remounts on note switches.

Changes

Project Philosophy Documentation

Layer / File(s)	Summary
Philosophy document and README intro PHILOSOPHY.md, README.md	Creates PHILOSOPHY.md with eight named principles (ephemeral scratchpad intent, active note-taking, zero-friction performance, developer workflows, open-source ethics, inline AI with encrypted keys, opinionated design, engineering rigor) plus a closing statement. Adds a blockquote in README.md after the main tagline that summarizes the stance and links to the new document.

Editor Remount on Note Switch

Layer / File(s)	Summary
CodeMirror keyed by active note ID src/components/Editor.tsx	Adds key={activeNote.id} to the CodeMirror element so React destroys and recreates the editor instance whenever the active note's ID changes, preventing state from one note persisting into another.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

A bunny hops between each note,
No stale state left to bloat,
Philosophy penned with care,
Eight principles fresh as morning air,
One tiny key, worlds apart! 🐇✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title directly addresses the main bug fix (preventing linked notes from being overwritten) which is the primary objective of this PR.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/internal-link-overwrite

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