feat(/compress): manual session compression with focus topic — closes #469 (PR #619 by @franksong2702)
POST /api/session/compress with optional focus_topic. Transcript-inline cards: command, running, complete (collapsible green), reference. /compact alias kept. Fixes: var(--green) undefined color, focus_topic 500-char cap. Independent review by @nesquena (4 passes).
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nesquena-hermes
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@@ -5,7 +5,8 @@
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const COMMANDS=[
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{name:'help', desc:t('cmd_help'), fn:cmdHelp},
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{name:'clear', desc:t('cmd_clear'), fn:cmdClear},
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{name:'compact', desc:t('cmd_compact'), fn:cmdCompact},
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{name:'compress', desc:t('cmd_compress'), fn:cmdCompress, arg:'[focus topic]'},
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{name:'compact', desc:t('cmd_compact_alias'), fn:cmdCompact},
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{name:'model', desc:t('cmd_model'), fn:cmdModel, arg:'model_name'},
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{name:'workspace', desc:t('cmd_workspace'), fn:cmdWorkspace, arg:'name'},
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{name:'new', desc:t('cmd_new'), fn:cmdNew},
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@@ -37,11 +38,26 @@ function getMatchingCommands(prefix){
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return COMMANDS.filter(c=>c.name.startsWith(q));
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}
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function _compressionAnchorMessageKey(m){
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if(!m||!m.role||m.role==='tool') return null;
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let content='';
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try{
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content=typeof msgContent==='function' ? String(msgContent(m)||'') : String(m.content||'');
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}catch(_){
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content=String(m.content||'');
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}
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const norm=content.replace(/\s+/g,' ').trim().slice(0,160);
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const ts=m._ts||m.timestamp||null;
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const attachments=Array.isArray(m.attachments)?m.attachments.length:0;
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if(!norm && !attachments && !ts) return null;
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return {role:String(m.role||''), ts, text:norm, attachments};
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}
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// ── Command handlers ────────────────────────────────────────────────────────
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function cmdHelp(){
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const lines=COMMANDS.map(c=>{
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const usage=c.arg?` <${c.arg}>`:'';
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const usage=c.arg ? (String(c.arg).startsWith('[') ? ` ${c.arg}` : ` <${c.arg}>`) : '';
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return ` /${c.name}${usage} — ${c.desc}`;
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});
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const msg={role:'assistant',content:t('available_commands')+'\n'+lines.join('\n')};
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@@ -54,6 +70,7 @@ function cmdClear(){
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if(!S.session)return;
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S.messages=[];S.toolCalls=[];
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clearLiveToolCards();
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if(typeof clearCompressionUi==='function') clearCompressionUi();
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renderMessages();
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$('emptyState').style.display='';
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showToast(t('conversation_cleared'));
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@@ -92,19 +109,134 @@ async function cmdWorkspace(args){
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}
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async function cmdNew(){
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if(typeof clearCompressionUi==='function') clearCompressionUi();
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await newSession();
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await renderSessionList();
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$('msg').focus();
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showToast(t('new_session'));
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}
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function cmdCompact(){
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// Send as a regular message to the agent -- the agent's run_conversation
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// preflight will detect the high token count and trigger _compress_context.
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// We send a user message so it appears in the conversation.
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$('msg').value='Please compress and summarize the conversation context to free up space.';
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send();
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showToast(t('compressing'));
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async function _runManualCompression(focusTopic){
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if(!S.session){showToast(t('no_active_session'));return;}
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let visibleCount=0;
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try{
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const sid=S.session.session_id;
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// Preflight: verify the viewed session still exists before compressing.
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// This avoids a confusing "not found" toast when the UI is stale.
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try{
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const live=await api(`/api/session?session_id=${encodeURIComponent(sid)}`);
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if(!live||!live.session||live.session.session_id!==sid){
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throw new Error('session no longer available');
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}
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S.session=live.session;
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S.messages=live.session.messages||[];
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S.toolCalls=live.session.tool_calls||[];
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}catch(preflightErr){
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if(typeof clearCompressionUi==='function') clearCompressionUi();
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if(typeof _setCompressionSessionLock==='function') _setCompressionSessionLock(null);
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if(typeof setBusy==='function') setBusy(false);
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if(typeof setComposerStatus==='function') setComposerStatus('');
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renderMessages();
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showToast('Compression failed: '+(preflightErr.message||'session no longer available'));
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return;
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}
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if(typeof setBusy==='function') setBusy(true);
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const body={session_id:sid};
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if(focusTopic) body.focus_topic=focusTopic;
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const visibleMessages=(S.messages||[]).filter(m=>{
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if(!m||!m.role||m.role==='tool') return false;
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if(m.role==='assistant'){
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const hasTc=Array.isArray(m.tool_calls)&&m.tool_calls.length>0;
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const hasTu=Array.isArray(m.content)&&m.content.some(p=>p&&p.type==='tool_use');
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if(hasTc||hasTu|| (typeof _messageHasReasoningPayload==='function' && _messageHasReasoningPayload(m))) return true;
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}
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return typeof msgContent==='function' ? !!msgContent(m) || !!m.attachments?.length : !!m.content || !!m.attachments?.length;
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});
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visibleCount=visibleMessages.length;
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const anchorVisibleIdx=Math.max(0, visibleCount - 1);
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const anchorMessageKey=_compressionAnchorMessageKey(visibleMessages[visibleMessages.length-1]||null);
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const commandText=focusTopic?`/compress ${focusTopic}`:'/compress';
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if(typeof setCompressionUi==='function'){
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setCompressionUi({
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sessionId:S.session.session_id,
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phase:'running',
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focusTopic:focusTopic||'',
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commandText,
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beforeCount:visibleCount,
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anchorVisibleIdx,
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anchorMessageKey,
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});
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}
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if(typeof setComposerStatus==='function') setComposerStatus(t('compressing'));
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renderMessages();
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const data=await api('/api/session/compress',{method:'POST',body:JSON.stringify(body)});
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if(data&&data.session){
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const currentSid=S.session&&S.session.session_id;
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if(data.session.session_id&&data.session.session_id!==currentSid){
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await loadSession(data.session.session_id);
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}else{
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S.session=data.session;
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S.messages=data.session.messages||[];
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S.toolCalls=data.session.tool_calls||[];
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clearLiveToolCards();
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localStorage.setItem('hermes-webui-session',S.session.session_id);
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syncTopbar();
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renderMessages();
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await renderSessionList();
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updateQueueBadge(S.session.session_id);
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}
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}
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const summary=data&&data.summary;
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if(typeof setCompressionUi==='function'&&S.session){
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const referenceMsg=(S.messages||[]).find(m=>typeof _isContextCompactionMessage==='function'&&_isContextCompactionMessage(m));
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const summaryRef=summary&&typeof summary.reference_message==='string' ? String(summary.reference_message||'').trim() : '';
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const referenceText=summaryRef || (referenceMsg?msgContent(referenceMsg)||String(referenceMsg.content||''):'');
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const effectiveFocus=(data&&data.focus_topic)||focusTopic||'';
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setCompressionUi({
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sessionId:S.session.session_id,
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phase:'done',
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focusTopic:effectiveFocus,
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commandText:effectiveFocus?`/compress ${effectiveFocus}`:'/compress',
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beforeCount:visibleCount,
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summary:summary||null,
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referenceText,
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anchorVisibleIdx: data?.session?.compression_anchor_visible_idx,
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anchorMessageKey: data?.session?.compression_anchor_message_key||null,
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});
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}
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if(typeof setComposerStatus==='function') setComposerStatus('');
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renderMessages();
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if(typeof _setCompressionSessionLock==='function') _setCompressionSessionLock(null);
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}catch(e){
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if(typeof setCompressionUi==='function'){
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const currentSid=S.session&&S.session.session_id;
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setCompressionUi({
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sessionId:currentSid||'',
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phase:'error',
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focusTopic:(focusTopic||'').trim(),
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commandText:focusTopic?`/compress ${focusTopic}`:'/compress',
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beforeCount:(S.messages||[]).filter(m=>m&&m.role&&m.role!=='tool').length,
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errorText:`Compression failed: ${e.message}`,
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anchorVisibleIdx: Math.max(0, visibleCount - 1),
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anchorMessageKey:null,
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});
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}
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if(typeof _setCompressionSessionLock==='function') _setCompressionSessionLock(null);
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if(typeof setBusy==='function') setBusy(false);
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if(typeof setComposerStatus==='function') setComposerStatus('');
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renderMessages();
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showToast('Compression failed: '+e.message);
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return;
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}
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if(typeof setBusy==='function') setBusy(false);
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}
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async function cmdCompress(args){
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await _runManualCompression((args||'').trim());
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}
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async function cmdCompact(args){
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await _runManualCompression((args||'').trim());
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}
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async function cmdUsage(){
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