chore(edit-docs): move Markdown documentation outside src for now

docs/User Guide/User Guide/Troubleshooting/Anonymized Database.md

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+# Anonymized Database
+![](Anonymized Database_image.png)
+
+In certain scenarios, understanding the structure of a database is crucial for troubleshooting issues. However, sharing your actual [database](../Advanced%20Usage/Database.md) file with personal notes is not advisable. To address this, Trilium offers a feature to anonymize the database. This feature can be accessed via Menu -> Options -> Advanced tab.
+
+This feature creates a copy of your database with all sensitive data removed. Specifically, it strips out note titles, contents, revisions, history, and some non-system attributes while retaining the overall structure and metadata, such as modification dates. After anonymization, the database undergoes a [vacuuming process](https://sqlite.org/lang_vacuum.html) to ensure no sensitive data remnants remain in the file. The anonymized database is saved in the `anonymized` directory within the [data directory](../Installation%20%26%20Setup/Data%20directory.md), making it safe to share with bug reports.
+
+This will create a copy of your document and remove all sensitive data (currently note titles, contents, revisions, history and some of the options, and non-system attributes) while leaving all structure and metadata (e.g. date of last change). After this is done, the database is [VACUUMed](https://sqlite.org/lang_vacuum.html) to make sure there's no stale sensitive data in the document file. The resulting file is stored in `anonymized` directory (placed in the [data directory](../Installation%20%26%20Setup/Data%20directory.md)). You can safely attach it to a bug report.
+
+## Command Line Anonymization
+
+If your [database](../Advanced%20Usage/Database.md) is corrupted to the point where Trilium cannot start, the anonymization process can still be executed via the command line:
+
+```
+node src/anonymize.js
+```
+
+Run this command from the directory containing Trilium's source files, typically found in the `resources/app` directory for desktop builds.

docs/User Guide/User Guide/Troubleshooting/Error logs.md

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+# Error logs
+It's important to provide all available error logs together with bug reports. This page will show you how to do it.
+
+## Backend logs
+
+Open [data directory](../Installation%20%26%20Setup/Data%20directory.md), go to `log` subdirectory and find the latest log file, e.g. `trilium-2022-12-14.log`. You can attach the whole file to the bug report (preferable) or open it and copy-paste only the last lines / lines you believe are relevant.
+
+If you have trouble finding it the log files, there's also an in-app option in top-left menu button -> Advanced -> Show backend log.
+
+## Frontend logs
+
+To provide frontend logs, we need to open the Developer Console. Often the easiest way is to press `CTRL-SHIFT-I` which should work in most browsers (and desktop app). Make sure that the error producing action happened right before you copy&paste the errors, the console is cleared on app restart.
+
+If that doesn't work, then:
+
+*   in Trilium desktop app, go to top-left menu button -> Advanced -> Open Dev Tools
+*   In Firefox/Chrome right-click anywhere in the page and click Inspect:
+
+![](../Attachments/error-logs-firefox-context.png)
+
+Once you have Dev Tools open, click on "Console" tab:
+
+![](Error logs_image.png)
+
+Copy-paste (or screenshot) the logs. It's better to provide not just errors, but the whole log, which might provide context while analyzing the bug.
+
+## Providing sensitive data
+
+If you don't feel comfortable attaching the logs or anything sensitive to the public GitHub issues, feel free to contact the devs in our Matrix [support channel](https://github.com/TriliumNext/Notes#-discuss-with-us).
+
+Use this email to also provide anything which could assist in analysing the bug - e.g. files/images/ZIPs being imported or [anonymized database](Anonymized%20Database.md).
+
+### Exporting note subtree for reproduction
+
+Often times, bugs manifest themselves in specific notes and having them would greatly ease reproduction and fixing.
+
+In such case, please export the relevant note subtree by right-clicking it on the left tree, choosing Export - HTML as ZIP:
+
+![](../Attachments/error-logs-export-subtree.png)

docs/User Guide/User Guide/Troubleshooting/Reporting issues.md

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+# Reporting issues
+Go to [Issues · TriliumNext/Notes](https://github.com/TriliumNext/Notes/issues) and press “New issue”.
+
+If you are reporting a bug, select “Bug Report” and fill in the details.

docs/User Guide/User Guide/Troubleshooting/Synchronization fails with 504.md

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+# Synchronization fails with 504 Gateway Timeout
+Synchronization can sometimes take a long amount of time in order to compute the items that require update. When running behind a reverse proxy, the request can time out.
+
+The solution is to increase the timeout at proxy level.
+
+## Nginx
+
+Add the following to the configuration file:
+
+```conf
+proxy_connect_timeout 300;
+proxy_send_timeout 300;
+proxy_read_timeout 300;
+send_timeout 300;
+```
+
+And restart the server.
+
+See [Nginx Proxy Setup](../Installation%20%26%20Setup/Server%20Installation/2.%20Reverse%20proxy/Nginx.md) for more information about the Nginx setup.
+
+If it still doesn't work, try increasing the timeout.

docs/User Guide/User Guide/Troubleshooting/TriliumNext Notes Not Opened.md

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+# "TriliumNext Notes" Not Opened
+![](2_TriliumNext Notes Not Open.png)
+
+When running TriliumNext for the first time or updating to a newer version, macOS will prevent its execution.
+
+On older versions of macOS it was possible to bypass this step simply by right clicking and selecting Open, which would show a button to run anyway. This got removed since macOS 15.0.
+
+To bypass this issue, follow these steps:
+
+1.  Go to System Settings → Privacy & Security and look for the “Security” section.
+2.  There should be a “TriliumNext Notes was blocked to protect your Mac” item. Simply click “Open Anyway”.
+3.  Select “Open Anyway” and proceed with the authentication. Afterwards the application should start on its own.
+
+|     |     |
+| --- | --- | 
+| ![](1_TriliumNext Notes Not Open.png)<br><br>The privacy settings in “System Settings”, showing the alert that TriliumNext was blocked. | ![](TriliumNext Notes Not Open.png)<br><br>The confirmation screen to bypass the run restrictions. |