From Prompt to Pocket

The trilogy's third season: put a working app in a patient's pocket with .NET MAUI Blazor Hybrid — one set of Blazor screens for Android, Windows and the browser, real push notifications, haptics, geolocation, a QR scanner and offline support, built with AI across twelve parts. Every native feature is a capability interface; every screenshot is real; every dead end is kept in.

12 parts · ~97 min of reading, in order, nothing assumed.

Start with Part 1

📦 Same repo, season three — tags pocket-02…11 📱 Setup & publishing runbook (docs/pocket.md)

From Prompt to Pocket · Part 1

From Prompt to Pocket: One App for Phone, Desk and Browser

Why ClinicLive's patients deserve an app, why Blazor Hybrid instead of a rewrite, what a shared-screens architecture costs — and the honest list of what this season does not cover. Sep 3, 2026 9 min read

From Prompt to Pocket · Part 2

One UI, Three Hosts: The Capability-Interface Pattern

A shared Razor Class Library, a MAUI host and a web host render the same screens; every native feature becomes an interface each host answers honestly. Plus what the first Android screenshot caught. Sep 3, 2026 9 min read

From Prompt to Pocket · Part 3

The App Needs a Door: A Thin API Over the Clinic

A phone can't talk to Postgres. Four minimal-API endpoints over the season-one services, a shared contracts project, the emulator's 10.0.2.2 — and why there's no CORS anywhere. Sep 3, 2026 8 min read

From Prompt to Pocket · Part 4

Live Queue in Your Pocket: SignalR, App Lifecycle and a Reconnect That Never Gives Up

The phone joins the same hub as the wall TV. One connection per app, a lifecycle capability for resume, and the screenshot that proved the default reconnect policy quits after forty seconds. Sep 3, 2026 8 min read

From Prompt to Pocket · Part 5

Buzz When You're Next: Haptics and Notifications, Permission in Context

Two verbs of haptics, a partial-class notifier per platform, Android 13's runtime permission asked at check-in — and the OS's own vibrator log as evidence for what no screenshot can show. Sep 3, 2026 8 min read

From Prompt to Pocket · Part 6

Push, for Real: Firebase Cloud Messaging to a Closed App

Device registration, a feature flag that is a class, the server pushing from CallNext — and the lesson that 'delivered to Firebase' is not 'shown on the phone' when your test kills the app the wrong way. Sep 3, 2026 9 min read

From Prompt to Pocket · Part 7

Find the Clinic: Geolocation, a Testable Haversine and One-Tap Directions

Location permission asked at the moment it makes sense, a fifteen-line haversine in shared code with a test that caught the AI's wrong 'known distance', and Android 11's package visibility rule. Sep 3, 2026 7 min read

From Prompt to Pocket · Part 8

Scan to Check In: A QR on the Ticket, a Native Scanner Over the WebView

QRCoder on the server, a ZXing camera page pushed over the Blazor UI, a parser whose test caught a regex letting a banned letter back in — and what the emulator could not stage. Sep 3, 2026 7 min read

From Prompt to Pocket · Part 9

Offline and Settings: Remember the Visit, Survive a Dead Signal

Connectivity, Preferences and SecureStorage as two more capabilities: a remembered code in the keystore, a cached visit stamped with when it was true, and airplane mode as the test. Sep 3, 2026 7 min read

From Prompt to Pocket · Part 10

Same App, on the Desk: Windows, One Breakpoint and a Waiting-Room Page

A desk-sized window, a single CSS breakpoint that turns the tab bar into a side rail on every host, a reception-desk queue page — and the Windows toast that stayed open, explained. Sep 3, 2026 6 min read

From Prompt to Pocket · Part 11

Ship It: Signed Android, Self-Contained Windows, CI for Both

A keystore outside the repo, signing properties on the command line, a 235 MB self-contained Windows folder, GitHub Actions for three targets — and the -r flag that breaks multi-target restores. Sep 3, 2026 7 min read

From Prompt to Pocket · Part 12

The Pocket Retro: What a Companion App Really Costs

The gallery across three hosts, the meter with its methodology, every AI mistake from the season, the three things the bench could not prove — and whether Blazor Hybrid was the right bet. Sep 3, 2026 12 min read