Add nightwatch75/dns-switcher 0.1.1 (#292)

Switch the system DNS between popular providers, custom servers, or the ISP
default, from a panel on the bar — no reconnect, no captive-portal re-run.
Detection reads the active connection's own ipv4.dns/ipv4.ignore-auto-dns
instead of guessing, so a manually configured resolver (LAN ones included)
shows as its provider and DHCP-assigned DNS shows as Default (ISP). A
singleton service entry owns detection/apply so multiple bars share one
engine.

Every bar gesture (left/right/scroll) is a manifest [widget.actions] default,
resolved through noctalia's own IPC registry, so any of them can be remapped
from the bar's own gesture settings without touching the plugin. The panel
also carries a DNS lookup tester: resolve a name against the active
provider's own address with dig/nslookup, to confirm a switch took effect or
that a provider blocks a domain.

Co-authored-by: nightwatch75 <nightwatch75@users.noreply.github.com>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

dns-switcher/plugin.toml

@@ -0,0 +1,127 @@
+# DNS Switcher — switch the system DNS (NetworkManager) from the bar.
+# Based on Ronin-CK's v4 "DNS Switcher", rebuilt on the v5 Luau API: the bar
+# widget shows the active provider and toggles a panel listing the configured
+# providers; picking one applies it immediately via `nmcli con mod` +
+# `nmcli device reapply` (no reactivation, the connection never drops).
+
+id = "nightwatch75/dns-switcher"
+name = "DNS Switcher"
+version = "0.1.1"
+plugin_api = 17
+author = "nightwatch75"
+license = "MIT"
+# dig (bind-tools/dnsutils) is preferred for the panel's lookup tester;
+# nslookup is the fallback when dig is missing. Neither is required for the
+# core switch/apply feature, only for that one panel section.
+dependencies = ["networkmanager", "dig", "nslookup"]
+tags = ["bar", "panel", "service", "network", "privacy"]
+icon = "world"
+description = "Switch the system DNS between popular providers, custom servers, or the ISP default (NetworkManager)."
+
+# Plugin-level settings: shared by the widget engine (detection/apply) and
+# the panel (provider list). Custom servers are five `Name = 1.2.3.4 5.6.7.8`
+# string fields, custom_1..custom_5; see the comment on them for why.
+
+[[setting]]
+key = "providers"
+type = "string"
+label_key = "settings.providers.label"
+description_key = "settings.providers.description"
+default = "google,cloudflare,opendns,adguard,quad9"
+
+# Five separate string settings rather than one list, because Noctalia's list
+# editor shows an existing row as a static label with remove/up/down buttons: a
+# typo means deleting the row and typing it again. A string renders as a text
+# field, so each server can be corrected in place. Five covers any realistic
+# number of custom resolvers.
+#
+# The keys are new names on purpose, not a retyped custom_dns. A stored value
+# whose type no longer matches its declaration makes Noctalia reject every
+# settings write, so the whole file stops saving; a key that simply no longer
+# exists is just a warning. That is what 0.0.8 was released to fix.
+[[setting]]
+key = "custom_1"
+type = "string"
+label_key = "settings.custom_1.label"
+description_key = "settings.custom.description"
+default = ""
+
+[[setting]]
+key = "custom_2"
+type = "string"
+label_key = "settings.custom_2.label"
+description_key = "settings.custom.description"
+default = ""
+
+[[setting]]
+key = "custom_3"
+type = "string"
+label_key = "settings.custom_3.label"
+description_key = "settings.custom.description"
+default = ""
+
+[[setting]]
+key = "custom_4"
+type = "string"
+label_key = "settings.custom_4.label"
+description_key = "settings.custom.description"
+default = ""
+
+[[setting]]
+key = "custom_5"
+type = "string"
+label_key = "settings.custom_5.label"
+description_key = "settings.custom.description"
+default = ""
+
+[[setting]]
+key = "poll_seconds"
+type = "int"
+label_key = "settings.poll_seconds.label"
+description_key = "settings.poll_seconds.description"
+default = 10
+min = 2
+max = 120
+
+[[setting]]
+key = "privilege_command"
+type = "string"
+label_key = "settings.privilege_command.label"
+description_key = "settings.privilege_command.description"
+default = ""
+advanced = true
+
+[[service]]
+id = "service"
+entry = "service.luau"
+
+[[panel]]
+id = "panel"
+entry = "panel.luau"
+# Wide enough for the longest built-in row, "OpenDNS · 208.67.222.222
+# 208.67.220.220", without eliding the addresses. Height grew in 0.0.13 to
+# fit the lookup tester below the provider list without starving it.
+width = 430
+height = 460
+placement = "attached"
+open_near_click = true
+
+[[widget]]
+id = "dns-switcher"
+entry = "dns-switcher.luau"
+
+  # Declared here rather than hard-coded in onClick/onRightClick, so the user
+  # can remap any of them from the bar's own gesture settings. "right"/
+  # "scroll_*" are the exact IPC lines service.luau's onIpc documents.
+  [widget.actions]
+  left = "panel-toggle nightwatch75/dns-switcher:panel"
+  right = "plugin nightwatch75/dns-switcher:service all apply default"
+  scroll_up = "plugin nightwatch75/dns-switcher:service all cycle next"
+  scroll_down = "plugin nightwatch75/dns-switcher:service all cycle prev"
+
+  [[widget.setting]]
+  key = "show_label"
+  type = "bool"
+  label_key = "settings.show_label.label"
+  description_key = "settings.show_label.description"
+  default = true