Remove quota feature (incompatible with ZFS-backed LXC)

Linux setquota/repquota require quota support on the underlying
filesystem. The target deployment is a Proxmox LXC on ZFS storage where
this is not available inside the container.

Removed: /api/quota endpoint, _quota_supported, _quota_usage,
_find_quota_fs, quotas.js, quota modal, dashboard quota table,
Quota button from share rows.

PLANNING.md updated: notes quota as out of scope with reason.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

static/js/dashboard.js

@@ -36,32 +36,5 @@ async function loadDashboard() {
             </tr>`).join('');
     }
 
-    // Persist quota support flag for shares.js to read
-    window._quotaSupported = d.quota_supported !== false;
-    window._quotaReason = d.quota_reason || '';
-
-    const qb = document.getElementById('dashQuotasBody');
-    if (!d.quota_supported) {
-        qb.innerHTML = `<tr><td colspan="4" style="color:var(--muted); font-size:.87rem">${esc(d.quota_reason)}</td></tr>`;
-    } else if (!d.quotas?.length) {
-        qb.innerHTML = `<tr><td colspan="4" style="color:var(--muted)">No quotas set.</td></tr>`;
-    } else {
-        qb.innerHTML = d.quotas.map(q => {
-            const p = Math.min(q.percent, 100);
-            const col = p > 90 ? 'var(--red)' : p > 75 ? 'var(--yellow)' : 'var(--green)';
-            return `<tr>
-                <td>${esc(q.user)}</td>
-                <td>${q.used_gb} GB</td>
-                <td>${q.soft_gb} GB</td>
-                <td>
-                    <div class="progress" style="height:8px">
-                        <div class="progress-bar" style="width:${p}%; background:${col}; transition:width .6s ease"></div>
-                    </div>
-                    <div class="mt-1" style="font-size:.75rem; color:var(--muted)">${p.toFixed(1)}%</div>
-                </td>
-            </tr>`;
-        }).join('');
-    }
-
     _startRefreshCountdown();
 }

static/js/quotas.js

@@ -1,76 +0,0 @@
-let _qCtx = null;
-
-function openQuotaModal(type, name, path, validUsers) {
-    _qCtx = { type, name, path, users: validUsers ? validUsers.split(/[\s,]+/).filter(Boolean) : [] };
-    document.getElementById('quotaModalTitle').textContent =
-        'Quota — ' + (type === 'smb' ? esc(name) : esc(path));
-
-    let body = '';
-    if (type === 'smb' && _qCtx.users.length > 0) {
-        body = _qCtx.users.map(u => `
-            <div class="mb-3">
-                <label class="form-label" style="color:var(--muted); font-size:.85rem">${esc(u)}</label>
-                <div class="input-group">
-                    <input type="number" class="form-control quota-inp" data-user="${esc(u)}" placeholder="GB" min="1">
-                    <span class="input-group-text">GB</span>
-                </div>
-            </div>`).join('');
-    } else {
-        const note = type === 'nfs'
-            ? `<p class="mb-3" style="color:var(--muted); font-size:.87rem">Path: <code>${esc(path)}</code></p>`
-            : `<p class="mb-3" style="color:var(--muted); font-size:.87rem">No valid users on this share — enter a username manually.</p>`;
-        body = note + `
-            <div class="mb-3">
-                <label class="form-label" style="color:var(--muted); font-size:.85rem">Username</label>
-                <input type="text" id="qManualUser" class="form-control" placeholder="username">
-            </div>
-            <div class="mb-3">
-                <label class="form-label" style="color:var(--muted); font-size:.85rem">Quota</label>
-                <div class="input-group">
-                    <input type="number" id="qManualGB" class="form-control" placeholder="GB" min="1">
-                    <span class="input-group-text">GB</span>
-                </div>
-            </div>`;
-    }
-
-    document.getElementById('quotaModalBody').innerHTML = body;
-    new bootstrap.Modal(document.getElementById('quotaModal')).show();
-}
-
-async function submitQuota() {
-    if (!_qCtx) return;
-    const calls = [];
-
-    if (_qCtx.type === 'smb' && _qCtx.users.length > 0) {
-        for (const inp of document.querySelectorAll('.quota-inp')) {
-            const gb = parseInt(inp.value);
-            if (!gb || gb <= 0) continue;
-            calls.push({ user: inp.dataset.user, quota: gb, path: _qCtx.path });
-        }
-    } else {
-        const user = document.getElementById('qManualUser')?.value.trim();
-        const gb = parseInt(document.getElementById('qManualGB')?.value);
-        if (!user) return showToast('Username is required.', 'danger');
-        if (!gb || gb <= 0) return showToast('Quota must be a positive number.', 'danger');
-        calls.push({ user, path: _qCtx.path || '/srv', quota: gb });
-    }
-
-    if (!calls.length) return showToast('No quota values entered.', 'warning');
-
-    bootstrap.Modal.getInstance(document.getElementById('quotaModal')).hide();
-
-    const responses = await Promise.all(calls.map(body =>
-        apiFetch('/api/quota', { method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(body) })
-    ));
-    const errors = [];
-    for (const r of responses) {
-        if (r && !r.ok) {
-            const d = await r.json().catch(() => ({}));
-            errors.push(d.error || `HTTP ${r.status}`);
-        }
-    }
-    if (errors.length) showToast('Quota error: ' + errors.join('; '), 'danger');
-    else showToast(`Quota${calls.length > 1 ? 's' : ''} applied.`);
-
-    loadDashboard();
-}

static/js/shares.js

@@ -14,7 +14,6 @@ async function loadShares() {
             const shareJson = esc(JSON.stringify(s));
             const nameJson  = esc(JSON.stringify(s.name));
             const pathJson  = esc(JSON.stringify(s.path));
-            const usersJson = esc(JSON.stringify(s.valid_users));
             return `<tr style="${enabled ? '' : 'opacity:.55'}">
                 <td>${esc(s.name)}</td>
                 <td><code>${esc(s.path)}</code></td>
@@ -23,8 +22,6 @@ async function loadShares() {
                 <td>
                     <button class="btn btn-sm me-1" style="border:1px solid var(--border); color:var(--muted)"
                         onclick="openEditModal('smb',${shareJson})">Edit</button>
-                    ${window._quotaSupported !== false ? `<button class="btn btn-sm me-1" style="border:1px solid var(--border); color:var(--muted)"
-                        onclick="openQuotaModal('smb',${nameJson},${pathJson},${usersJson})">Quota</button>` : ''}
                     <button class="btn btn-sm me-1" style="border:1px solid var(--border); color:var(--muted)"
                         onclick="toggleShare('smb',${nameJson},${!enabled})">${enabled ? 'Disable' : 'Enable'}</button>
                     <button class="btn btn-sm btn-danger"
@@ -50,8 +47,6 @@ async function loadShares() {
                 <td>
                     <button class="btn btn-sm me-1" style="border:1px solid var(--border); color:var(--muted)"
                         onclick="openEditModal('nfs',${shareJson})">Edit</button>
-                    ${window._quotaSupported !== false ? `<button class="btn btn-sm me-1" style="border:1px solid var(--border); color:var(--muted)"
-                        onclick="openQuotaModal('nfs',null,${pathJson},null)">Quota</button>` : ''}
                     <button class="btn btn-sm me-1" style="border:1px solid var(--border); color:var(--muted)"
                         onclick="toggleShare('nfs',${pathJson},${!enabled})">${enabled ? 'Disable' : 'Enable'}</button>
                     <button class="btn btn-sm btn-danger"