A card move changes a property

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<!doctype html><html lang="en-US"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>A card move changes a property</title><style>*{box-sizing:border-box}html{color-scheme:light}body{margin:0;background:var(--bg,#eef1f4);color:var(--ink,#233449);font:16px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}main{max-width:1040px;margin:auto;padding:26px 28px 44px}header{margin-bottom:20px}h1{font-size:clamp(26px,4vw,36px);letter-spacing:-.035em;line-height:1.15;margin:5px 0 10px}h2{font-size:21px;line-height:1.3;margin:0 0 15px}h3{font-size:17px;margin:0 0 9px}p{margin:8px 0 16px}.kicker{font-size:12px;text-transform:uppercase;letter-spacing:.12em;font-weight:750;color:var(--accent,#315b87)}.muted,small{color:#556473}.panel{margin:20px 0;padding:24px;border:1px solid var(--line,#ccd5df);border-radius:10px;background:#fff}.hero{padding:24px;background:var(--hero,#183b5c);color:#fff;border-radius:12px;margin:18px 0}.hero .kicker,.hero 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checked>Include missing values (YAML null)</label></div><p id="editable" class="note"></p><div class="row"><label for="note">Inspect a source note<select id="note"><option value="A">A · Practice/note-a.md</option><option value="B">B · Practice/note-b.md</option><option value="C">C · Practice/note-c.md</option></select></label><label for="destination">Proposed stored status<select id="destination"><option value="Draft">Draft</option><option value="Review" selected>Review</option></select></label></div><div class="actions"><button type="button" id="move">Preview property change</button><button type="button" id="reset" class="secondary">Reset local fixture</button></div><p id="change" aria-live="polite"></p></section><div class="grid"><section class="panel"><h2>Source note · in-memory model</h2><pre id="sourceNote"></pre><p>No real vault file is read or written.</p></section><section class="panel"><h2>Proposed .base configuration</h2><pre id="config"></pre></section></div><details><summary>Native acceptance ledger · pending</summary><p>Installed version: unknown. Current native Kanban help requires Obsidian 1.14+. Inspect actual file identity, status frontmatter, body text, and reopened view after a native move. This local model is not evidence that those native checks passed.</p><p>Formula stage is defined as note.status; matching text does not make the formula writable. Stage is a display name, not a renamed status key. Hidden None groups do not delete or finish C. Global and added view filters combine with AND; this minimal fixture uses only global filters.</p><p>Folder grouping, file moves, plugins, sync, work completion, approval, and WIP enforcement are outside this example. Reset restores local authored data only.</p><p><a href="https://obsidian.md/help/bases/views/kanban">Obsidian Kanban semantics</a> · <a href="https://obsidian.md/help/bases/syntax">Bases syntax</a></p></details><footer>Local example · No information is sent or saved.</footer></main><script>const $=id=>document.getElementById(id);const esc=s=>String(s).replace(/[&<>"']/g,c=>({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));function gcd(a,b){return b?gcd(b,a%b):a}function rat(n,d=1n){const g=gcd(n,d);return {n:n/g,d:d/g}}function mul(a,b){return rat(a.n*b.n,a.d*b.d)}function div(a,b){return rat(a.n*b.d,a.d*b.n)}function rounded(r,p=6){const scale=10n**BigInt(p),q=(r.n*scale*2n+r.d)/(2n*r.d),s=q.toString().padStart(p+1,'0');return p?s.slice(0,-p)+'.'+s.slice(-p):s}function show(r,unit=''){if(r.n>0n&&r.n*1000000n<r.d)return '<0.000001 '+unit;return '≈ '+rounded(r,6).replace(/([.][0-9]*?)0+$/,'$1').replace(/[.]$/,'')+' '+unit}function decimal(s,name,max=1000000,places=6){if(!new RegExp('^[0-9]+(?:[.][0-9]{1,'+places+'})?$').test(s)||s.length>35)throw Error(name+': enter a nonnegative dot-decimal number, up to '+places+' decimal places.');let [a,b='']=s.split('.');const r=rat(BigInt(a+b),10n**BigInt(b.length));if(r.n>BigInt(max)*r.d)throw Error(name+': maximum is '+max+'.');return r}function whole(s,name,max){if(!/^[0-9]+$/.test(s)||s.length>15||Number(s)>max)throw Error(name+': enter an integer from 0 to '+max+'.');return Number(s)}function onForm(fn,clear){$('form').addEventListener('submit',e=>{e.preventDefault();fn()});$('form').addEventListener('input',clear);$('form').addEventListener('change',clear)}

const fixture=()=>[{id:'A',file:'Practice/note-a.md',status:'Draft',body:'Practice A outline.'},{id:'B',file:'Practice/note-b.md',status:'Review',body:'Practice B check.'},{id:'C',file:'Practice/note-c.md',status:null,body:'Practice C pending.'}];let notes=fixture();function view(ns,showNone){const groups=['Draft','Review',...(showNone?[null]:[])];return groups.map(status=>({status,notes:ns.filter(n=>n.status===status)}))}function moveNote(ns,id,status,group){if(group!=='property')throw Error('Formula grouping is read-only.');if(!['Draft','Review'].includes(status))throw Error('Unsupported status.');const n=ns.find(n=>n.id===id);if(!n)throw Error('Unknown note.');const old=n.status;n.status=status;return {file:n.file,before:old,after:n.status,body:n.body}}function render(){const formula=$('group').value==='formula',none=$('showNone').checked,groups=view(notes,none);$('groupLabel').textContent='Group: '+(formula?'formula.stage':'note.status');$('columns').innerHTML=groups.map(g=>'<section class="column"><h2>'+esc(g.status??'None')+' <small>'+g.notes.length+'</small></h2>'+g.notes.map(n=>'<article class="note-card"><b>'+esc(n.file.split('/')[1])+'</b><p>'+esc(n.body)+'</p><small>Stored status: '+esc(n.status??'(property absent)')+'</small></article>').join('')+'</section>').join('');$('membership').textContent='Source dataset: 3 notes. Visible cards: '+groups.reduce((s,g)=>s+g.notes.length,0)+'. '+(!none?'C still exists with no status; its group is hidden.':'Missing status appears in None; it is not Draft.');$('editable').textContent=formula?'Computed stage labels are read-only. Group visibility can still change.':'Stored-property grouping permits the modeled status change. This does not prove actual work was reviewed.';$('move').disabled=formula;$('destination').disabled=formula;const n=notes.find(x=>x.id===$('note').value);$('sourceNote').textContent=(n.status===null?'(No status frontmatter)':'---\nstatus: '+n.status+'\n---')+'\n\n'+n.body+'\n\nFile: '+n.file;const grouping=formula?'formula.stage':'note.status';$('config').textContent='filters:\n  and:\n    - file.inFolder("Practice")\n    - file.ext == "md"\nformulas:\n  stage: note.status\nproperties:\n  status:\n    displayName: Stage\nviews:\n  - type: kanban\n    name: Practice\n    groupBy:\n      property: '+grouping+'\n      direction: ASC\n    groupOrder:\n      - Draft\n      - Review'+(none?'\n      - null':'');}['group','showNone','note'].forEach(x=>$(x).addEventListener('change',()=>{$('change').textContent='View changed; inspect the current source and configuration.';render()}));$('move').onclick=()=>{try{const r=moveNote(notes,$('note').value,$('destination').value,$('group').value);render();$('change').textContent='Local preview: '+r.file+' status '+(r.before??'(absent)')+' → '+r.after+'. File identity and body remain unchanged in this model. Native edit/reopen checks are pending.'}catch(e){$('change').textContent=e.message}};$('reset').onclick=()=>{notes=fixture();$('group').value='property';$('showNone').checked=true;$('note').value='A';$('destination').value='Review';$('change').textContent='Local fixture restored. No native file was undone.';render()};render();</script></body></html>