Warmth Threads · Keepsake Stack

v5 Opus 4.8 Fully Autonomous

high Claude Code autonomous

Purpose

A variant of Warmth Threads for Tend — the conversation history beneath the unread/debt line, so you remember who someone is before you triage them. Part of a 5-variant autonomous research series.

Variant Focus

A tactile keepsake stack where memories are layered, slightly-rotated paper note-cards that fan open like a shoebox of mementos rather than a digital timeline.

Prompt

This version was generated autonomously by a sub-agent in a fully-autonomous origination round. The prompt below is the exact prompt given to the build agent — crafted by the orchestrating workflow from the OG master prompt and the ideation phase.

Build a standalone Tend variant called KEEPSAKE STACK — one of 5 interpretations of the Warmth Threads feature. NO JavaScript. Pure HTML/CSS only. Exactly 375×720, mobile-only, wrapped in .tnd-app.

FEATURE: Warmth Threads adds the warm history underneath Tend's debt line. This variant makes that history TACTILE and physical — memory as keepsake.

YOUR ANGLE — PHYSICAL KEEPSAKE STACK:
Each person-card, when opened (CSS checkbox + :checked), reveals its memories not as a flat timeline but as a STACK of small physical keepsake cards — like mementos in a shoebox. Collapsed: the card shows a tiny peeking stack (2-3 paper edges fanned at the bottom with slight rotate() and box-shadows, 'tap to remember'). Expanded (max-height/transform transition): the stack fans out into a readable vertical run of note-cards, each one a small parchment 'memento' with: slight per-card rotation (rotate(-1.5deg) / rotate(1deg) alternating for hand-placed feel), soft paper drop-shadow, a date in Fraunces, a glyph (☎ ✉ ◆ ♡), and the remembered-context line. Add tactile touches with pure CSS: a faint torn/taped top edge, subtle inner texture via layered gradients, a slightly different paper tint per type. PERSONAL ♡ keepsakes are the special ones: warm amber paper, a tiny pressed-heart sticker, sitting proudest in the stack — like a polaroid you kept. Transactional ones are plainer, cooler paper.

The relationship-age line at the bottom should read like a label on the box: sage Fraunces 'You've tended Maria for 14 months.' Keep the triage verb reachable in the thumb zone.

Wrap it in the normal Tend inbox: sticky pressure-context header + debt-ranked feed (heat edges, monograms, debt lines, triage verbs). Author ONE card pre-fanned showing the full keepsake stack with a glowing personal memento; others collapsed to their peeking-stack state, tappable via :checked. Lean hard into the physicality — rotations, shadows, paper — while staying within the warm Tend palette. This is the most material/sentimental of the 5 variants.

HONEST PROOF STATE: hero card checkbox checked by default to show the fanned stack; others show the collapsed peeking-stack affordance.

PALETTE (scope to .tnd-app, NOT :root): --bg:#faf7f2; --bg2:#f4eee4; --card:#fffdf9; --ink:#2b2622; --ink2:#6f675e; --ink3:#9b9288; --line:#ece4d7; --cold:#6b8cae; --warm:#e0a23b; --urgent:#e06a5b; --green:#3da06b; --accent:#2f9e8f; --accent-soft:#dff0ed. Fonts: Fraunces + Inter via Google Fonts. Deliver one self-contained HTML file.

Origination Prompt

Part of an autonomous origination series. View the origination prompt →

Agent Trace

Lead → Author → [Builder×5] (parallel)

Lead 4m high Opus 4.8

Orchestrated the autonomous origination workflow: 3 feature scouts → author → 5 parallel builders → assembly.

↓

Author 38s high Opus 4.8

Chose the Warmth Threads feature and wrote the OG master prompt + 5 distinct variant build-prompts.

Prompt ↓

Full Prompt

You are the Lead of an autonomous origination round for Tend (mobile-only pure-CSS relationship-inbox CRM). Three new-feature proposals were generated in parallel (The Drift Tide, The Daily Round, Warmth Threads). Pick the single strongest feature, then (1) write the verbatim OG MASTER PROMPT that spawns 5 parallel variants of that ONE feature, and (2) define 5 genuinely DISTINCT design/interaction interpretations, each with a concept name, distinguishing angle, one-sentence Variant Focus, and a complete self-contained build prompt (handed verbatim to its builder). featureName must be kebab-case starting with 'tend-'.

↓

Builder 1m 40s high Opus 4.8

Built this variant (Keepsake Stack) as a self-contained CSS-only Tend fragment.

Prompt ↓

Full Prompt

Build a standalone Tend variant called KEEPSAKE STACK — one of 5 interpretations of the Warmth Threads feature. NO JavaScript. Pure HTML/CSS only. Exactly 375×720, mobile-only, wrapped in .tnd-app.

FEATURE: Warmth Threads adds the warm history underneath Tend's debt line. This variant makes that history TACTILE and physical — memory as keepsake.

YOUR ANGLE — PHYSICAL KEEPSAKE STACK:
Each person-card, when opened (CSS checkbox + :checked), reveals its memories not as a flat timeline but as a STACK of small physical keepsake cards — like mementos in a shoebox. Collapsed: the card shows a tiny peeking stack (2-3 paper edges fanned at the bottom with slight rotate() and box-shadows, 'tap to remember'). Expanded (max-height/transform transition): the stack fans out into a readable vertical run of note-cards, each one a small parchment 'memento' with: slight per-card rotation (rotate(-1.5deg) / rotate(1deg) alternating for hand-placed feel), soft paper drop-shadow, a date in Fraunces, a glyph (☎ ✉ ◆ ♡), and the remembered-context line. Add tactile touches with pure CSS: a faint torn/taped top edge, subtle inner texture via layered gradients, a slightly different paper tint per type. PERSONAL ♡ keepsakes are the special ones: warm amber paper, a tiny pressed-heart sticker, sitting proudest in the stack — like a polaroid you kept. Transactional ones are plainer, cooler paper.

The relationship-age line at the bottom should read like a label on the box: sage Fraunces 'You've tended Maria for 14 months.' Keep the triage verb reachable in the thumb zone.

Wrap it in the normal Tend inbox: sticky pressure-context header + debt-ranked feed (heat edges, monograms, debt lines, triage verbs). Author ONE card pre-fanned showing the full keepsake stack with a glowing personal memento; others collapsed to their peeking-stack state, tappable via :checked. Lean hard into the physicality — rotations, shadows, paper — while staying within the warm Tend palette. This is the most material/sentimental of the 5 variants.

HONEST PROOF STATE: hero card checkbox checked by default to show the fanned stack; others show the collapsed peeking-stack affordance.

PALETTE (scope to .tnd-app, NOT :root): --bg:#faf7f2; --bg2:#f4eee4; --card:#fffdf9; --ink:#2b2622; --ink2:#6f675e; --ink3:#9b9288; --line:#ece4d7; --cold:#6b8cae; --warm:#e0a23b; --urgent:#e06a5b; --green:#3da06b; --accent:#2f9e8f; --accent-soft:#dff0ed. Fonts: Fraunces + Inter via Google Fonts. Deliver one self-contained HTML file.

Versions

Origination Prompt → v1 Pull-Down Thread Opus v2 Thread Flip Opus v3 Memory Lane Opus v4 Warmth Ledger Opus v5 Keepsake Stack Opus

Warmth Threads

9 owed

3 people slipping past their rhythm. The shoebox remembers what the inbox forgets.

Maria Okonkwo

owed a reply 9 days · usual rhythm 4d

tap to remember

You've tended Maria for 14 months.

♡

♡ Mar 2

She mailed you the marigold seeds from her mother's garden. You promised to send a photo when they bloom.

☎ Feb 11

40-min call — talked through her sister's move to Lisbon. She sounded lighter by the end.

✉ Jan 18

She forwarded the grant link "before anyone else sees it." You haven't said thanks.

◆ Dec 4

Coffee at Verde. Where this all started.

Devon Reyes

drifting 6 days · usual rhythm 5d

Check in

tap to remember

You've tended Devon for 8 months.

♡

♡May 9

He named you first when his startup closed its seed round. "Couldn't have done the deck without you."

☎Apr 20

Late call — talked him off the ledge about the co-founder split.

Aiko Tanaka

cooling 21 days · usual rhythm 14d

Reach out

tap to remember

You've tended Aiko for 2 years.

✉Mar 26

Sent the book recommendation you forgot to follow up on.

◆Feb 2

Conference in Kyoto — she introduced you to her whole table.

Sam Whitfield

cooling 18 days · usual rhythm 10d

Reach out

tap to remember

You've tended Sam for 11 months.

☎Mar 30

He called to wish you luck before the pitch. Remembered the date.

A shoebox of nine. Open one.