Full digital ecosystem for a family marine parts business: storefront, cold email automation, and analytics at zero hosting cost.

• Cold-email agent: Claude API prompt templates per industry vertical → Python orchestrator → Brevo SMTP with sender rotation and bounce handling → delivery rate tracking. 90%+ inbox rate across campaign cycles.
• eBay Browse API integration: Python ingestion pipeline parses product data, maps to eBay taxonomy, and pushes listings in batch. ~60% reduction in per-SKU listing time vs. manual entry.
• PostHog JS SDK on a fully static Astro/Cloudflare Pages frontend: custom event schema tracking browse → click → eBay redirect funnel, session replay configured to exclude contact fields.
• Zero-persistent-backend architecture: Astro SSG → Cloudflare Pages CDN, GitHub Actions CI, all serverless. Total recurring cost: $0.

YouTube Short to 6-platform publication-ready content pack in under 3 minutes: Medium article (2000+ words) plus Twitter/X, LinkedIn, Bluesky, Reddit, and Threads variants.

• Two-call Gemini 1.5 Flash architecture: Call 1 generates the full Medium article (2000+ word hard floor enforced in prompts/system.md); Call 2 derives all 5 social platform variants from the finished article body, not the raw transcript, ensuring coherence across outputs.
• Failure First framework: heuristic validators scan for hedging language, filler phrases, and passive-voice saturation; triggered gates resubmit with escalating specificity constraints until output clears all checks.
• CI mode: _IS_CI = bool(os.getenv('CI')) — GitHub Actions sets this automatically, eliminating all input() calls that would hang the workflow runner.
• Bluesky auto-posting via atproto library. Thread constructed from generated posts, published live if credentials are set. Medium pushes as draft only via markdown2medium. yt-dlp subtitle extraction with manual transcript fallback for Shorts lacking caption tracks.

Data-driven SEO layer for a second-hand industrial automation parts eBay store. Formal experiment with null hypothesis, UTM attribution, and a 90-day decision gate built into the architecture.

• TypeScript eBay Browse API integration (src/lib/ebay.ts): OAuth client_credentials token flow → paginated item search (200/page) with filter=sellers:{id} → category and condition derived programmatically from eBay taxonomy strings → results cached per build.
• GitHub Actions daily sync (02:00 UTC): npm ci → astro build && npx pagefind --source dist with eBay env vars injected → Cloudflare Pages deploy via cloudflare/pages-action.
• UTM attribution fully typed in src/lib/utm.ts. buildEbayUrl() and buildStoreUrl() enforce utm_source=zamaanautomation, utm_medium=organic, utm_campaign={pageType}, utm_content={category} on every outbound link.
• Pagefind: static full-text search index built at compile time, runs in the browser, zero server, zero API cost. PostHog event schema tracks BUY_ON_EBAY_CLICKED and CONTACT_FORM_SUBMITTED for the full funnel from discovery to eBay redirect.

Zero-build PWA that generates closed-loop running routes to a precise target distance or time. Hexagonal geometric projection snapped to real pedestrian paths via OSRM, with per-km splits and GPX export.

• Hexagonal geometric projection engine (routeEngine.js): calculates a 6-sided polygon with a random rotational offset around the start point, then snaps all 6 waypoints to pedestrian routes via OSRM /route/v1/foot/. Random offset generates a different route orientation on every run.
• Fuzzy convergence: radiusFactor is adjusted each iteration based on the ratio of OSRM-returned distance to target distance. Loop continues until within tolerance or max iterations reached.
• Haversine fallback: when OSRM is unreachable, routeEngine.js computes geometric distance using the Haversine formula and renders the raw polygon as 'Simulation Mode'. App stays usable without the API.
• Zero-build stack: Leaflet 1.9.4 + Tailwind CSS + Lucide icons all loaded from CDN. No npm, no bundler. Service worker caches app shell for offline use. Time mode: user input in minutes → converted at 5.5 min/km → same route engine runs.

Offline-first PWA delivering 22,000+ lines of multilingual Islamic liturgical content across 5 categories: sub-10ms search, 80MB offline payload, zero hosting cost.

• Zero-build architecture: pure HTML/CSS/JS, no framework, no npm. Service worker (sw.js, v9) pre-caches the app shell; 80MB content payload is lazy-loaded and persisted in Cache API indefinitely.
• Content pipeline: ron.db (87MB SQLite, authoring tool only, never committed) → scripts/export.py → 2,704 JSON files in docs/data/lines/ + 4 index files (categories.json, nav.json, search.json, audio.json). Browser fetches pre-exported JSON, no SQLite runtime in browser.
• Deep Search: search.json is a pre-built multilingual full-text index (Arabic/Urdu/English/Roman Urdu) scanned in a single vanilla JS pass, no query engine, no dependency, sub-10ms on mobile.
• Cache invalidation: bump VERSION constant in sw.js to force all clients to flush stale caches. Active design work: Mockups/ directory contains 10+ screen specs used for iterative UI refinement.

Open-source Claude Code skill for generating 16:9 hand-drawn article illustrations: 9 culturally-grounded character variants, 4 image generation providers with auto-detection, ported and expanded from a Chinese Codex skill.

• SKILL.md entrypoint for Claude Code: reads settings.json for default character, scans project context if no article is provided, identifies cognitive structure, selects character, calls scripts/generate_image.py.
• Provider auto-detection in generate_image.py: checks env vars in order (GEMINI_API_KEY → OPENAI_API_KEY → STABILITY_API_KEY), selects first available provider, generates a 16:9 PNG. Provider aliases handled (gemini → nanobanana, openai → dalle, sd → stability).
• DALL-E routing: uses gpt-image-1 (1536x1024) as primary; falls back to dall-e-3 (1792x1024) automatically. stdlib Python for Gemini, DALL-E, and Imagen paths, only Stability AI requires pip install requests.
• install.sh is idempotent: copies skill files to ~/.claude/skills/, reads existing settings.json and merges rather than overwriting. User's default character survives upgrades. Multi-platform: Claude Code (SKILL.md), Codex, Gemini CLI, Hermes, Antigravity agent configs all included.