fix(dotfiles): allow tilde (~) in git repository URLs (#763)

## Description

The URL validation regex in the dotfiles module was rejecting URLs
containing tilde (`~`) characters, which are commonly used in Bitbucket
Server for user repositories (e.g.
`ssh://git@bitbucket.example.org:7999/~username/repo.git`).

This adds `~` to the allowed character set in all three validation
regexes (for `default_dotfiles_uri`, `dotfiles_uri`, and the
`coder_parameter` validation).

## Type of Change

- [ ] New module
- [ ] New template
- [x] Bug fix
- [ ] Feature/enhancement
- [ ] Documentation
- [ ] Other

## Module Information

**Path:** `registry/coder/modules/dotfiles`  
**New version:** `v1.3.1`  
**Breaking change:** [ ] Yes [x] No

## Testing & Validation

- [x] Tests pass (`bun test`)
- [x] Code formatted (`bun fmt`)
- [ ] Changes tested locally

## Related Issues

Fixes #762

Co-authored-by: blink-so[bot] <211532188+blink-so[bot]@users.noreply.github.com>

Author: blinkagent[bot]

registry/coder/modules/dotfiles/README.md

@@ -18,7 +18,7 @@ Under the hood, this module uses the [coder dotfiles](https://coder.com/docs/v2/
 module "dotfiles" {
   count    = data.coder_workspace.me.start_count
   source   = "registry.coder.com/coder/dotfiles/coder"
-  version  = "1.3.0"
+  version  = "1.3.1"
   agent_id = coder_agent.example.id
 }
 ```
@@ -31,7 +31,7 @@ module "dotfiles" {
 module "dotfiles" {
   count    = data.coder_workspace.me.start_count
   source   = "registry.coder.com/coder/dotfiles/coder"
-  version  = "1.3.0"
+  version  = "1.3.1"
   agent_id = coder_agent.example.id
 }
 ```
@@ -42,7 +42,7 @@ module "dotfiles" {
 module "dotfiles" {
   count    = data.coder_workspace.me.start_count
   source   = "registry.coder.com/coder/dotfiles/coder"
-  version  = "1.3.0"
+  version  = "1.3.1"
   agent_id = coder_agent.example.id
   user     = "root"
 }
@@ -54,14 +54,14 @@ module "dotfiles" {
 module "dotfiles" {
   count    = data.coder_workspace.me.start_count
   source   = "registry.coder.com/coder/dotfiles/coder"
-  version  = "1.3.0"
+  version  = "1.3.1"
   agent_id = coder_agent.example.id
 }
 
 module "dotfiles-root" {
   count        = data.coder_workspace.me.start_count
   source       = "registry.coder.com/coder/dotfiles/coder"
-  version      = "1.3.0"
+  version      = "1.3.1"
   agent_id     = coder_agent.example.id
   user         = "root"
   dotfiles_uri = module.dotfiles.dotfiles_uri
@@ -76,7 +76,7 @@ You can set a default dotfiles repository for all users by setting the `default_
 module "dotfiles" {
   count                = data.coder_workspace.me.start_count
   source               = "registry.coder.com/coder/dotfiles/coder"
-  version              = "1.3.0"
+  version              = "1.3.1"
   agent_id             = coder_agent.example.id
   default_dotfiles_uri = "https://github.com/coder/dotfiles"
 }

registry/coder/modules/dotfiles/main.test.ts

@@ -26,6 +26,7 @@ describe("dotfiles", async () => {
       "git@github.com:coder/dotfiles.git",
       "git://github.com/coder/dotfiles.git",
       "ssh://git@github.com/coder/dotfiles.git",
+      "ssh://git@bitbucket.example.org:7999/~myusername/dotfiles.git",
     ];
     for (const url of validUrls) {
       const state = await runTerraformApply(import.meta.dir, {

registry/coder/modules/dotfiles/main.tf

@@ -40,7 +40,7 @@ variable "default_dotfiles_uri" {
   validation {
     condition = (
       var.default_dotfiles_uri == "" ||
-      can(regex("^(https?://|ssh://|git@|git://)[a-zA-Z0-9._/:@-]+$", var.default_dotfiles_uri))
+      can(regex("^(https?://|ssh://|git@|git://)[a-zA-Z0-9._/:@~-]+$", var.default_dotfiles_uri))
     )
     error_message = "Must be a valid dotfiles repository URL (https, git@, or git://) without special characters."
   }
@@ -55,7 +55,7 @@ variable "dotfiles_uri" {
     condition = (
       var.dotfiles_uri == null ||
       var.dotfiles_uri == "" ||
-      can(regex("^(https?://|ssh://|git@|git://)[a-zA-Z0-9._/:@-]+$", var.dotfiles_uri))
+      can(regex("^(https?://|ssh://|git@|git://)[a-zA-Z0-9._/:@~-]+$", var.dotfiles_uri))
     )
     error_message = "Must be a valid dotfiles repository URL (https, git@, or git://) without special characters."
   }
@@ -102,7 +102,7 @@ data "coder_parameter" "dotfiles_uri" {
   icon         = "/icon/dotfiles.svg"
 
   validation {
-    regex = "^$|^(https?://|ssh://|git@|git://)[a-zA-Z0-9._/:@-]+$"
+    regex = "^$|^(https?://|ssh://|git@|git://)[a-zA-Z0-9._/:@~-]+$"
     error = "Must be a valid dotfiles repository URL (https, git@, or git://) without special characters."
   }
 }