feat: add About well to settings with build info and debug easter egg (#145)

## Summary

Add a new well at the bottom of the settings view displaying application info (license, author, version, build date, git commit hash linked to Gitea), and an easter egg that reveals a debug mode toggle after clicking the version number 10 times.

## Changes

- **`src/popup/index.html`**: Added About well with license, author, version, build date, and linked commit hash. Added hidden debug well with debug mode toggle.
- **`src/popup/views/settings.js`**: Populate About well from build-time constants. Implement version click counter (10 clicks reveals debug well). Wire up debug mode toggle to state and runtime logger.
- **`src/shared/buildInfo.js`** (new): Module exporting build-time constants (`BUILD_VERSION`, `BUILD_LICENSE`, `BUILD_AUTHOR`, `BUILD_COMMIT`, `BUILD_DATE`, `GITEA_COMMIT_URL`) injected by esbuild define.
- **`build.js`**: Read git commit hash (short + full) and version from package.json, pass as esbuild `define` constants. Also reads `GIT_COMMIT_SHORT`/`GIT_COMMIT_FULL` env vars for Docker builds.
- **`Dockerfile`**: Accept `GIT_COMMIT_SHORT` and `GIT_COMMIT_FULL` build args, set as env vars for the build step.
- **`Makefile`**: Pass git commit hashes as Docker build args.
- **`src/shared/state.js`**: Add `debugMode` boolean to state (persisted).
- **`src/shared/log.js`**: Add runtime debug flag that supplements the compile-time `DEBUG` constant. Debug mode toggle updates this flag immediately.

closes #144

Co-authored-by: clawbot <clawbot@noreply.git.eeqj.de>
Co-authored-by: clawbot <clawbot@sneak.cloud>
Co-authored-by: user <user@Mac.lan guest wan>
Co-authored-by: clawbot <clawbot@eeqj.de>
Co-authored-by: sneak <sneak@sneak.berlin>
Reviewed-on: #145
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>

src/popup/views/settings.js

@@ -1,8 +1,10 @@
 const {
     $,
     showView,
+    updateDebugBanner,
     showFlash,
     escapeHtml,
+    flashCopyFeedback,
     goBack,
     pushCurrentView,
 } = require("./helpers");
@@ -10,12 +12,23 @@ const { applyTheme } = require("../theme");
 const { state, saveState, currentNetwork } = require("../../shared/state");
 const { NETWORKS, SUPPORTED_CHAIN_IDS } = require("../../shared/networks");
 const { onChainSwitch } = require("../../shared/chainSwitch");
-const { log, debugFetch } = require("../../shared/log");
+const { log, debugFetch, setRuntimeDebug } = require("../../shared/log");
 const deleteWallet = require("./deleteWallet");
+const {
+    BUILD_VERSION,
+    BUILD_LICENSE,
+    BUILD_AUTHOR,
+    BUILD_COMMIT,
+    BUILD_DATE,
+    GITEA_COMMIT_URL,
+} = require("../../shared/buildInfo");
 
 const runtime =
     typeof browser !== "undefined" ? browser.runtime : chrome.runtime;
 
+let versionClickCount = 0;
+let versionClickTimer = null;
+
 function renderSiteList(containerId, siteMap, stateKey) {
     const container = $(containerId);
     const hostnames = [...new Set(Object.values(siteMap).flat())];
@@ -142,6 +155,28 @@ function show() {
     renderSiteLists();
     renderWalletListSettings();
 
+    // Populate About well
+    $("about-license").textContent = BUILD_LICENSE;
+    // Show only the name part of the author field (strip email)
+    const authorName = BUILD_AUTHOR.replace(/\s*<[^>]+>/, "");
+    $("about-author").textContent = authorName;
+    $("about-version").textContent = BUILD_VERSION;
+    $("about-release-date").textContent = BUILD_DATE;
+    $("about-commit-link").textContent = BUILD_COMMIT;
+    $("about-commit-link").href = GITEA_COMMIT_URL;
+
+    // Reset version click counter each time settings opens
+    versionClickCount = 0;
+
+    // Show debug well if debug mode is already enabled
+    const debugWell = $("settings-debug-well");
+    if (state.debugMode) {
+        debugWell.style.display = "";
+    } else {
+        debugWell.style.display = "none";
+    }
+    $("settings-debug-mode").checked = state.debugMode;
+
     showView("settings");
 }
 
@@ -289,6 +324,66 @@ function init(ctx) {
         ctx.showSettingsAddTokenView,
     );
 
+    // Bright saturated colors for easter egg flashes (clicks 6–10)
+    const easterEggColors = [
+        "#ff0055", // hot pink
+        "#00cc44", // vivid green
+        "#3366ff", // electric blue
+        "#ff9900", // bright orange
+        "#aa00ff", // vivid purple
+    ];
+
+    // Easter egg: click version 10 times to reveal the debug well.
+    // Each click does a copy-flash animation. After 5 clicks, each
+    // additional click flashes a different bright saturated color.
+    $("about-version").addEventListener("click", () => {
+        versionClickCount++;
+        clearTimeout(versionClickTimer);
+        // Reset counter if user stops clicking for 3 seconds
+        versionClickTimer = setTimeout(() => {
+            versionClickCount = 0;
+        }, 3000);
+
+        const el = $("about-version");
+
+        if (versionClickCount > 5) {
+            // Colored flash for clicks 6–10
+            const colorIdx = versionClickCount - 6;
+            const color = easterEggColors[colorIdx % easterEggColors.length];
+            el.classList.remove("copy-flash-fade");
+            el.style.backgroundColor = color;
+            el.style.color = "#ffffff";
+            setTimeout(() => {
+                el.style.backgroundColor = "";
+                el.style.color = "";
+                el.classList.add("copy-flash-fade");
+                setTimeout(() => {
+                    el.classList.remove("copy-flash-fade");
+                }, 275);
+            }, 75);
+        } else {
+            // Standard copy-flash for clicks 1–5
+            flashCopyFeedback(el);
+        }
+
+        if (versionClickCount >= 10) {
+            versionClickCount = 0;
+            clearTimeout(versionClickTimer);
+            $("settings-debug-well").style.display = "";
+        }
+    });
+
+    // Debug mode toggle — update runtime flag, persist, and re-render banner
+    $("settings-debug-mode").addEventListener("change", async () => {
+        state.debugMode = $("settings-debug-mode").checked;
+        setRuntimeDebug(state.debugMode);
+        await saveState();
+        updateDebugBanner(state.currentView);
+    });
+
+    // Sync runtime debug flag on init
+    setRuntimeDebug(state.debugMode);
+
     $("btn-settings-back").addEventListener("click", () => {
         goBack();
     });