Don't send full Doubles to Comick for progress (#4090)

Previously, user could end up with progress displays like

35.019996643066406/100

because Mihon was sending raw Doubles/simply stringified Doubles for
progress data.

We now round to 2 decimal places & trim off any trailing zeroes such
that integers are sent as "1" instead of "1.0" while retaining "25.5"
and "41.02" as such.

(cherry picked from commit 1ca9b0efb8)

CHANGELOG.md

@@ -12,6 +12,9 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 
 ## [Unreleased]
 
+### Fixed
+- Fix long floating point numbers showing up in Comick progress ([@MajorTanya](https://github.com/MajorTanya)) ([#4090](https://github.com/mihonapp/mihon/pull/4090))
+
 ## [v0.21.1] - 2026-10-12
 ### Fixed
 - Fixed refreshing chapters failing with the app language set to Arabic or another language with its own digits ([@AntsyLich](https://github.com/AntsyLich)) ([`8457fb9`](https://github.com/mihonapp/mihon/commit/8457fb9))

app/src/main/java/eu/kanade/tachiyomi/data/track/comick/ComickApi.kt

@@ -33,6 +33,7 @@ import okhttp3.Request
 import okhttp3.RequestBody
 import okhttp3.RequestBody.Companion.toRequestBody
 import uy.kohesive.injekt.injectLazy
+import java.math.RoundingMode
 import java.security.SecureRandom
 import java.util.Base64
 import kotlin.time.Duration.Companion.minutes
@@ -77,7 +78,14 @@ class ComickApi(
                 put("status", track.status.toApiListStatus())
                 if (track.last_chapter_read > 0) {
                     putJsonObject("progress") {
-                        put("number", track.last_chapter_read)
+                        put(
+                            "number",
+                            track.last_chapter_read
+                                .toBigDecimal()
+                                .setScale(2, RoundingMode.HALF_UP)
+                                .stripTrailingZeros()
+                                .toPlainString(),
+                        )
                     }
                 } else {
                     put("progress", null)
@@ -140,7 +148,14 @@ class ComickApi(
                 put("rating", track.score.toInt().takeIf { it > 0 })
                 put("status", track.status.toApiListStatus())
                 putJsonObject("progress") {
-                    put("number", track.last_chapter_read.toString())
+                    put(
+                        "number",
+                        track.last_chapter_read
+                            .toBigDecimal()
+                            .setScale(2, RoundingMode.HALF_UP)
+                            .stripTrailingZeros()
+                            .toPlainString(),
+                    )
                 }
             }
                 .toString()