diff --git a/docs/CLI_FLAGS.md b/docs/CLI_FLAGS.md
index b6e7b9f52..c1c79a3d2 100644
--- a/docs/CLI_FLAGS.md
+++ b/docs/CLI_FLAGS.md
@@ -1,32 +1,34 @@
 # CLI Options
 
 Options:
-| Flag | Effect |
-|------|--------|
-|`--minimized` | Start deltachat in minimized mode with trayicon (trayicon will be activated for this session regardless whether it's disabled) |
-| **Development Options** | |
-| `--translation-watch` | enable auto-reload for `_locales/_untranslated_en.json`, when that file changes the current language is reloaded |
-| `--devmode` | opens electron devtools and activates `--log-debug` & `--log-to-console` |
-| `--allow-unsafe-core-replacement` | allow changing core with `DELTA_CHAT_RPC_SERVER` and looking for it in `PATH` instead of forcing the use of the prebuilds |
-| **Theme** | |
-| `--theme <themeid>` | set a specific theme (see [THEMES.md](./THEMES.md)) |
-| `--theme-watch` | enable auto-reload for the active theme |
-| **Logging** | |
-| `--log-debug` | Log debug messages |
-| `--log-to-console` | Output the log to stdout / Chrome dev console |
-| `--machine-readable-stacktrace` | Enable JSON stack trace |
-| `--no-color` | Disable colors in the output of main process |
+
+| Flag                              | Effect                                                                                                                         |
+| --------------------------------- | ------------------------------------------------------------------------------------------------------------------------------ |
+| `--minimized`                     | Start deltachat in minimized mode with trayicon (trayicon will be activated for this session regardless whether it's disabled) |
+| **Development Options**           |                                                                                                                                |
+| `--translation-watch`             | enable auto-reload for `_locales/_untranslated_en.json`, when that file changes the current language is reloaded               |
+| `--devmode`                       | opens electron devtools and activates `--log-debug` & `--log-to-console`                                                       |
+| `--allow-unsafe-core-replacement` | allow changing core with `DELTA_CHAT_RPC_SERVER` and looking for it in `PATH` instead of forcing the use of the prebuilds      |
+| **Theme**                         |                                                                                                                                |
+| `--theme <themeid>`               | set a specific theme (see [THEMES.md](./THEMES.md))                                                                            |
+| `--theme-watch`                   | enable auto-reload for the active theme                                                                                        |
+| **Logging**                       |                                                                                                                                |
+| `--log-debug`                     | Log debug messages                                                                                                             |
+| `--log-to-console`                | Output the log to stdout / Chrome dev console                                                                                  |
+| `--machine-readable-stacktrace`   | Enable JSON stack trace                                                                                                        |
+| `--no-color`                      | Disable colors in the output of main process                                                                                   |
 
 For more info on logging see [LOGGING.md](./LOGGING.md).
 
 ## Env vars
 
 useful env vars you can set:
-| Variable (sometimes with value) | Effect |
-|---------------------------------|--------|
-|`NODE_OPTIONS=--enable-source-maps`| Make stacktraces in errors useful by enabling source map support in the main process |
-|`DC_TEST_DIR=<dir>`| specify an alternative data directory |
-| `DELTACHAT_LOCALE_DIR=<path>` | allows to specify an alternative translation data directory in development, the intended purpose is to be used together with `--translation-watch` [^1] |
+
+| Variable (sometimes with value)     | Effect                                                                                                                                                  |
+| ----------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `NODE_OPTIONS=--enable-source-maps` | Make stacktraces in errors useful by enabling source map support in the main process                                                                    |
+| `DC_TEST_DIR=<dir>`                 | specify an alternative data directory                                                                                                                   |
+| `DELTACHAT_LOCALE_DIR=<path>`       | allows to specify an alternative translation data directory in development, the intended purpose is to be used together with `--translation-watch` [^1] |
 
 Most env vars can be set in .env files, read by dotenv. Look fo a env.example in the related package for more info.
 
diff --git a/docs/LOGGING.md b/docs/LOGGING.md
index e5703179d..e441e20a5 100644
--- a/docs/LOGGING.md
+++ b/docs/LOGGING.md
@@ -12,7 +12,7 @@ Debug messages are disabled by default, enable them with the `--log-debug` flag.
 | `--no-color`                    | Disable colors in the output of main process  |
 
 > as of 1.21.0 `--devmode` enables both `--log-debug` and `--log-to-console` (formerly `--debug`)
-> ~as of 1.3.0 `--debug` enables both `--log-debug` and `--log-to-console`~
+> ~~as of 1.3.0 `--debug` enables both `--log-debug` and `--log-to-console`~~
 
 #### Log locations
 
diff --git a/eslint.config.js b/eslint.config.js
index 2981ca55e..aad939cb1 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -34,7 +34,8 @@ export default defineConfig(
         'react-hooks': pluginReactHooks,
       },
       rules: {
-        ...pluginReactHooks.configs.recommended.rules,
+        'react-hooks/rules-of-hooks': 'error',
+        'react-hooks/exhaustive-deps': 'warn',
       },
     },
     {
diff --git a/packages/frontend/src/components/AudioRecorder/AudioRecorder.tsx b/packages/frontend/src/components/AudioRecorder/AudioRecorder.tsx
index 8e0091719..425819eac 100644
--- a/packages/frontend/src/components/AudioRecorder/AudioRecorder.tsx
+++ b/packages/frontend/src/components/AudioRecorder/AudioRecorder.tsx
@@ -10,8 +10,8 @@ import { getLogger } from '@deltachat-desktop/shared/logger'
 const log = getLogger('renderer/AudioRecorder')
 
 export enum AudioErrorType {
-  'NO_INPUT',
-  'OTHER_ERROR',
+  NO_INPUT,
+  OTHER_ERROR,
 }
 
 export class AudioRecorderError extends Error {
@@ -105,7 +105,7 @@ export const AudioRecorder = ({
   }, [openDialog, tx])
 
   const onRecordingStart = async () => {
-    let access = 'unknown'
+    let access: string
     try {
       access = await runtime.checkMediaAccess('microphone')
       log.debug('checkMediaAccess', { access })
diff --git a/packages/frontend/src/components/Reactions/index.tsx b/packages/frontend/src/components/Reactions/index.tsx
index 0b6886d0a..b18e4911b 100644
--- a/packages/frontend/src/components/Reactions/index.tsx
+++ b/packages/frontend/src/components/Reactions/index.tsx
@@ -31,7 +31,7 @@ export default function Reactions(props: Props) {
   const { reactionsByContact, reactions } = props.reactions
 
   useEffect(() => {
-    let emojiSpaces = 0
+    let emojiSpaces: number
     if (messageWidth <= 234) {
       emojiSpaces = 1
     } else {
diff --git a/packages/frontend/src/components/dialogs/FullscreenMedia.tsx b/packages/frontend/src/components/dialogs/FullscreenMedia.tsx
index 00a0e5492..138589614 100644
--- a/packages/frontend/src/components/dialogs/FullscreenMedia.tsx
+++ b/packages/frontend/src/components/dialogs/FullscreenMedia.tsx
@@ -127,7 +127,7 @@ export default function FullscreenMedia(props: Props & DialogProps) {
     },
   ])
 
-  let elm = null
+  let elm: React.ReactNode
 
   if (isImage(fileMime)) {
     const imageHeight =
diff --git a/packages/frontend/src/components/dialogs/ViewProfile/index.tsx b/packages/frontend/src/components/dialogs/ViewProfile/index.tsx
index 926532288..31a9928c6 100644
--- a/packages/frontend/src/components/dialogs/ViewProfile/index.tsx
+++ b/packages/frontend/src/components/dialogs/ViewProfile/index.tsx
@@ -36,7 +36,7 @@ const log = getLogger('renderer/dialogs/ViewProfile')
 
 function LastSeen({ timestamp }: { timestamp: number }) {
   const tx = useTranslationFunction()
-  let lastSeenString = ''
+  let lastSeenString: string
   let lastSeenAbsolute: string | undefined = undefined
 
   // Dates from 1970 mean that contact has never been seen
diff --git a/packages/frontend/src/components/message/Message.tsx b/packages/frontend/src/components/message/Message.tsx
index 1dc53b3a0..76d18ab90 100644
--- a/packages/frontend/src/components/message/Message.tsx
+++ b/packages/frontend/src/components/message/Message.tsx
@@ -674,7 +674,7 @@ async function fetchPrivittyBubbleState(
   }
 
   const filePath = normalizePrivittyFilePath(file)
-  let status: PrivittyStatus = 'none'
+  let status: PrivittyStatus
   let expiryTime: number | null = null
   let waitingCount = 0
   let isPrivittyForwarded = false
@@ -1184,7 +1184,7 @@ export default function Message(props: {
   useEffect(() => {
     const resizeHandler = () => {
       if (messageContainerRef.current) {
-        let messageWidth = 0
+        let messageWidth: number
         // set message width which is used by reaction component
         // to adapt the number of visible reactions
         if (fileMime || window.innerWidth < 900) {
@@ -1297,8 +1297,6 @@ export default function Message(props: {
     openViewProfileDialog(accountId, contact.id)
   }
 
-  let onClickMessageBody
-
   // Check if the message is saved or has a saved message
   // in both cases we display the bookmark icon
   const isOrHasSavedMessage = message.originalMsgId
@@ -1605,13 +1603,7 @@ export default function Message(props: {
             </div>
           )}
           {/* <p>Document File</p> */}
-          <div
-            className={classNames('msg-body', {
-              'msg-body--clickable': onClickMessageBody,
-            })}
-            onClick={onClickMessageBody}
-            tabIndex={onClickMessageBody ? tabindexForInteractiveContents : -1}
-          >
+          <div className='msg-body' tabIndex={-1}>
             {message.quote !== null && (
               <Quote
                 quote={message.quote}
diff --git a/packages/frontend/src/components/message/messageFunctions.ts b/packages/frontend/src/components/message/messageFunctions.ts
index 94cd08bfd..866b84e90 100644
--- a/packages/frontend/src/components/message/messageFunctions.ts
+++ b/packages/frontend/src/components/message/messageFunctions.ts
@@ -71,7 +71,7 @@ export async function openAttachmentInShell(
       notificationType: 0,
     })
 
-    throw new Error('File is no longer available')
+    throw new Error('File is no longer available', { cause: error })
   }
 
   let filePathName = tmpFile
diff --git a/packages/frontend/src/components/screens/WelcomeScreen/ImportLicenseScreen.tsx b/packages/frontend/src/components/screens/WelcomeScreen/ImportLicenseScreen.tsx
index d028511ed..b74bd5569 100644
--- a/packages/frontend/src/components/screens/WelcomeScreen/ImportLicenseScreen.tsx
+++ b/packages/frontend/src/components/screens/WelcomeScreen/ImportLicenseScreen.tsx
@@ -86,7 +86,7 @@ export default function ImportLicenseScreen({ onBack, onDone }: Props) {
 
   const handlePasteUrl = useCallback(async () => {
     if (processingRef.current) return
-    let text = ''
+    let text: string
     try {
       text = await navigator.clipboard.readText()
     } catch {
diff --git a/packages/frontend/src/hooks/chat/useMessage.ts b/packages/frontend/src/hooks/chat/useMessage.ts
index 32322511d..7a8600494 100644
--- a/packages/frontend/src/hooks/chat/useMessage.ts
+++ b/packages/frontend/src/hooks/chat/useMessage.ts
@@ -143,7 +143,7 @@ export default function useMessage() {
       message: Partial<T.MessageData>
     ) => {
       log.debug('filePathName', message)
-      let msgId = 0
+      let msgId: number
       if (message.file && message.filename) {
         msgId = await BackendRemote.rpc.sendMsg(accountId, chatId, {
           ...MESSAGE_DEFAULT,
diff --git a/packages/frontend/src/stores/messagelist.ts b/packages/frontend/src/stores/messagelist.ts
index de48bd0f4..43ce1f917 100644
--- a/packages/frontend/src/stores/messagelist.ts
+++ b/packages/frontend/src/stores/messagelist.ts
@@ -707,7 +707,7 @@ class MessageListStore extends Store<MessageListState> {
         false,
         true
       )
-      let indexEnd = -1
+      let indexEnd: number
       const last_item: Type.MessageListItem | undefined =
         this.state.messageListItems[this.state.messageListItems.length - 1]
 
@@ -883,9 +883,9 @@ class MessageListStore extends Store<MessageListState> {
     // However, let's keep the code that supports arbitrary chatId,
     // which can be "enabled" by setting `chatIdPreset = undefined`.
     const chatIdPreset: number | undefined = this.chatId
-    let chatId: number | undefined = undefined
+    let chatId: number | undefined
 
-    let jumpToMessageStack: number[] = []
+    let jumpToMessageStack: number[]
     if (jumpToMessageId === undefined) {
       // jump down
       const jumpToMessageStackLength = this.state.jumpToMessageStack.length
diff --git a/packages/shared/localize.ts b/packages/shared/localize.ts
index a7b8ac037..0f10b9b85 100644
--- a/packages/shared/localize.ts
+++ b/packages/shared/localize.ts
@@ -51,7 +51,7 @@ export function translate(
     raw_opts?: 'other' | getMessageOptions
   ) {
     const translationKey = key as string
-    let opts: getMessageOptions = {}
+    let opts: getMessageOptions
     if (typeof raw_opts === 'string') opts = { quantity: raw_opts }
     else opts = Object.assign({}, raw_opts)
 
diff --git a/packages/target-browser/package.json b/packages/target-browser/package.json
index 9f7ba7e9a..067f24647 100644
--- a/packages/target-browser/package.json
+++ b/packages/target-browser/package.json
@@ -2,7 +2,7 @@
   "private": true,
   "name": "@deltachat-desktop/target-browser",
   "type": "module",
-  "version": "1.6.0",
+  "version": "1.7.0",
   "license": "GPL-3.0-or-later",
   "scripts": {
     "check:types": "tsc --noEmit && tsc --noEmit -p runtime-browser",
diff --git a/packages/target-browser/runtime-browser/runtime.ts b/packages/target-browser/runtime-browser/runtime.ts
index 0bb44a575..85014c30c 100644
--- a/packages/target-browser/runtime-browser/runtime.ts
+++ b/packages/target-browser/runtime-browser/runtime.ts
@@ -290,7 +290,8 @@ class BrowserRuntime implements Runtime {
           ).json()
         } else {
           throw new Error(
-            'language load failed, even alternative of base language failed.'
+            'language load failed, even alternative of base language failed.',
+            { cause: error1 }
           )
         }
       } catch (error2) {
@@ -299,7 +300,6 @@ class BrowserRuntime implements Runtime {
           error1,
           error2
         )
-        locale = 'en'
         localeMessages = messagesEnglish
       }
     }
diff --git a/packages/target-browser/src/index.ts b/packages/target-browser/src/index.ts
index c5954a1ab..f95ff00ba 100644
--- a/packages/target-browser/src/index.ts
+++ b/packages/target-browser/src/index.ts
@@ -191,14 +191,14 @@ app.get('/themes.json', async (_req, res) => {
   res.json(await readThemeDir())
 })
 
-let certificate = ''
+let certificate: string
 if (process.env.PRIVATE_CERTIFICATE_CERT) {
   certificate = process.env.PRIVATE_CERTIFICATE_CERT
 } else {
   certificate = await readFile(PRIVATE_CERTIFICATE_CERT, 'utf8')
 }
 
-let certificateKey = ''
+let certificateKey: string
 if (process.env.PRIVATE_CERTIFICATE_KEY) {
   certificateKey = process.env.PRIVATE_CERTIFICATE_KEY
 } else {
diff --git a/packages/target-electron/src/themes.ts b/packages/target-electron/src/themes.ts
index 412d02923..ea446e74b 100644
--- a/packages/target-electron/src/themes.ts
+++ b/packages/target-electron/src/themes.ts
@@ -91,7 +91,7 @@ function systemDefault() {
 export function resolveThemeAddress(address: string): string {
   const addressParts =
     address != 'system' ? address.split(':') : systemDefault()
-  let realPath = ''
+  let realPath: string
   if (addressParts.length != 2)
     throw 'not an theme address, must have the format [location]:[themename]'
   if (addressParts[0] == 'dc') {
@@ -127,7 +127,8 @@ If you did not specify this, ask the person which installed deltachat for you to
 
 If they are not available find the shortcut/.desktop file yourself and edit it to not contain the "--theme" argument.
 Using --theme is for developers and theme creators ONLY and should not be used by normal users
-If you have question or need help, feel free to ask in our forum https://support.delta.chat.`
+If you have question or need help, feel free to ask in our forum https://support.delta.chat.`,
+        { cause: error }
       )
     }
     DesktopSettings.update({ activeTheme: app.rc['theme'] })
diff --git a/packages/target-tauri/src-tauri/Cargo.toml b/packages/target-tauri/src-tauri/Cargo.toml
index 24ab4e09c..074690df8 100644
--- a/packages/target-tauri/src-tauri/Cargo.toml
+++ b/packages/target-tauri/src-tauri/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-tauri"
-version = "1.6.0"
+version = "1.7.0"
 description = "Privitty Chat Desktop: Tauri Edition. Secure, cross-platform, decentralized super-app messenger." 
 authors = ["DeltaChat Contributors"]
 edition = "2021"