Update packaging plan to TurtleTerm product surfaces

Author: mdheller

docs/sourceos/PACKAGING.md

@@ -4,7 +4,7 @@
 
 Make TurtleTerm installable with Homebrew on macOS and Linux first.
 
-TurtleTerm is the SourceOS policy-aware, agent-addressable terminal workbench product built on the WezTerm engine. We preserve upstream WezTerm attribution and licensing while exposing the SourceOS product as TurtleTerm.
+TurtleTerm is the SourceOS policy-aware, agent-addressable terminal workbench product. Public package, command, profile, icon, and documentation surfaces should say TurtleTerm. Required third-party notices are preserved in license and notice files.
 
 Windows packaging is intentionally postponed until the macOS and Linux Homebrew path is stable.
 
@@ -63,32 +63,25 @@ After tagged releases exist:
 brew install turtle-term
 ```
 
-### v2: Bottles
-
-Once CI is stable, publish bottles for macOS Apple Silicon, macOS Intel if needed, Linux x86_64, and Linux ARM64 if supported by CI and build dependencies.
-
 ## What the formula should install
 
-The Homebrew package should install:
-
-- `wezterm`
-- `wezterm-gui`
-- `wezterm-mux-server`
-- `turtle-term`
-- `sourceos-term` compatibility command
-- TurtleTerm / SourceOS WezTerm profile pack
-- TurtleTerm / SourceOS terminal docs
+The Homebrew package should install TurtleTerm launchers, TurtleTerm command tools, the TurtleTerm profile, TurtleTerm skill manifests, TurtleTerm brand assets, SourceOS terminal docs, and private terminal runtime files under `libexec/turtle-term`.
 
 Expected installed paths:
 
 ```text
-$(brew --prefix)/bin/wezterm
-$(brew --prefix)/bin/wezterm-gui
-$(brew --prefix)/bin/wezterm-mux-server
+$(brew --prefix)/bin/turtleterm
+$(brew --prefix)/bin/turtleterm-mux-server
 $(brew --prefix)/bin/turtle-term
+$(brew --prefix)/bin/turtle-agentd
+$(brew --prefix)/bin/turtle-agentctl
+$(brew --prefix)/bin/turtle-tmux
 $(brew --prefix)/bin/sourceos-term
-$(brew --prefix)/etc/turtle-term/wezterm.lua
+$(brew --prefix)/etc/turtle-term/turtleterm.lua
+$(brew --prefix)/share/turtle-term/brand/
+$(brew --prefix)/share/turtle-term/skills/
 $(brew --prefix)/share/turtle-term/sourceos/
+$(brew --prefix)/libexec/turtle-term/
 ```
 
 ## Build posture
@@ -99,30 +92,18 @@ The current formula is experimental and source-build oriented. It should remain
 
 Homebrew works across macOS and Linux with one install vocabulary. It gives TurtleTerm one near-term package lane for developer workstations before we split into distro-native packages, Flatpak, AppImage, Windows packaging, or OS image integration.
 
-## Linux notes
-
-Linux Homebrew is not the final SourceOS OS packaging strategy. It is the developer bootstrap strategy. The eventual SourceOS Linux image/package lane should still support native packaging overlays and immutable OS integration.
-
-## macOS notes
-
-macOS support is important because current development workstations may be macOS while the target OS remains Linux-first. The Homebrew formula should not require users to replace their existing terminal. It should install TurtleTerm as an additional toolchain surface.
-
-## Windows postponed lane
-
-Windows package candidates are postponed until the macOS/Linux Homebrew path is stable.
-
 ## Acceptance criteria
 
 v0 is complete when:
 
 1. A local developer can run `brew install --HEAD ./packaging/homebrew/Formula/turtle-term.rb`.
-2. `turtle-term paths` works after installation.
-3. `turtle-term run -- echo hello` emits events and receipts.
-4. `sourceos-term paths` still works as a compatibility command.
-5. `wezterm --version` works after installation.
-6. `wezterm-gui --version` works after installation where GUI dependencies are available.
+2. `turtleterm` launches TurtleTerm.
+3. `turtle-term paths` works after installation.
+4. `turtle-term run -- echo hello` emits events and receipts.
+5. `turtle-agentctl --stdio ping` works.
+6. `sourceos-term paths` still works as a compatibility command.
 7. Formula has clear caveats for profile installation.
-8. The packaging lane does not modify WezTerm Rust internals.
+8. Private runtime binaries are not exposed as public product commands.
 
 v1 is complete when `SourceOS-Linux/homebrew-tap` exists, the formula is copied into `Formula/turtle-term.rb`, macOS and Linux CI test `brew install --HEAD turtle-term`, and README documents install, upgrade, uninstall, and profile activation.