chore(release): bump workspace version to 0.21.0

42 commits since v0.20.0 (v0.20.1 was tagged but never announced;
superseded by this release rather than repointed, since real new
functionality landed after it was cut). Minor, not patch: the
headline is streaming one of the machine's own physical monitors
instead of always creating a virtual display — pick it from a new
console card or pin it in host.env, on KWin, Mutter, sway and
Hyprland, in both the Punktfunk app and Moonlight.

Also folds in the full v0.20.1 fix bundle: three Windows install
blockers found within hours of 0.20.0, GameStream/Moonlight compat
back to opt-in on fresh installs, three gamescope Game Mode takeover
faults, a laptop-panel stall misdiagnosis, and the PyroWave
high-bitrate latency-creep bundle — plus a KWin 6.7 regression found
while building the monitor feature (silent kscreen-doctor fallback
on every session) and a winget release-verification CI fix.

Wire protocol stays at 2, the embeddable C ABI at 13 and the Windows
virtual-display driver protocol at 6. GET /display/monitors is a new
additive endpoint; the display policy gains an optional
capture_monitor field. No embedder rebuild required.

Notes authored ahead of the tag per docs/releases/README.md.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Cargo.lock

@@ -1022,7 +1022,7 @@ dependencies = [
 
 [[package]]
 name = "display-disturb"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "windows 0.62.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2201,7 +2201,7 @@ dependencies = [
 
 [[package]]
 name = "latency-probe"
-version = "0.20.1"
+version = "0.21.0"
 
 [[package]]
 name = "lazy_static"
@@ -2306,7 +2306,7 @@ dependencies = [
 
 [[package]]
 name = "libvpl-sys"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "bindgen",
  "cmake",
@@ -2341,7 +2341,7 @@ checksum = "0ceec5bc11778974d1bcb055b18002eba7f4b3518b6a0081b3af5f21666da9ad"
 
 [[package]]
 name = "loss-harness"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "punktfunk-core",
 ]
@@ -2830,7 +2830,7 @@ checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
 [[package]]
 name = "pf-capture"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ashpd",
@@ -2851,7 +2851,7 @@ dependencies = [
 
 [[package]]
 name = "pf-client-core"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ash",
@@ -2875,7 +2875,7 @@ dependencies = [
 
 [[package]]
 name = "pf-clipboard"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ashpd",
@@ -2893,7 +2893,7 @@ dependencies = [
 
 [[package]]
 name = "pf-console-ui"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ash",
@@ -2914,7 +2914,7 @@ dependencies = [
 
 [[package]]
 name = "pf-encode"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ash",
@@ -2938,7 +2938,7 @@ dependencies = [
 
 [[package]]
 name = "pf-ffvk"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "ash",
  "bindgen",
@@ -2947,7 +2947,7 @@ dependencies = [
 
 [[package]]
 name = "pf-frame"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "libc",
@@ -2959,7 +2959,7 @@ dependencies = [
 
 [[package]]
 name = "pf-gpu"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "pf-host-config",
@@ -2973,11 +2973,11 @@ dependencies = [
 
 [[package]]
 name = "pf-host-config"
-version = "0.20.1"
+version = "0.21.0"
 
 [[package]]
 name = "pf-inject"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ashpd",
@@ -3006,14 +3006,14 @@ dependencies = [
 
 [[package]]
 name = "pf-paths"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "tracing",
 ]
 
 [[package]]
 name = "pf-presenter"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ash",
@@ -3028,7 +3028,7 @@ dependencies = [
 
 [[package]]
 name = "pf-vdisplay"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ashpd",
@@ -3060,7 +3060,7 @@ dependencies = [
 
 [[package]]
 name = "pf-win-display"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "pf-paths",
@@ -3072,7 +3072,7 @@ dependencies = [
 
 [[package]]
 name = "pf-zerocopy"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ash",
@@ -3280,7 +3280,7 @@ dependencies = [
 
 [[package]]
 name = "punktfunk-client-android"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "android_logger",
  "jni",
@@ -3296,7 +3296,7 @@ dependencies = [
 
 [[package]]
 name = "punktfunk-client-linux"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "async-channel",
@@ -3312,7 +3312,7 @@ dependencies = [
 
 [[package]]
 name = "punktfunk-client-session"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "pf-client-core",
@@ -3327,7 +3327,7 @@ dependencies = [
 
 [[package]]
 name = "punktfunk-client-windows"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "async-channel",
  "ffmpeg-next",
@@ -3346,7 +3346,7 @@ dependencies = [
 
 [[package]]
 name = "punktfunk-core"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "aes-gcm",
  "bytes",
@@ -3378,7 +3378,7 @@ dependencies = [
 
 [[package]]
 name = "punktfunk-host"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "aes",
  "aes-gcm",
@@ -3462,7 +3462,7 @@ dependencies = [
 
 [[package]]
 name = "punktfunk-probe"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "mdns-sd",
@@ -3476,7 +3476,7 @@ dependencies = [
 
 [[package]]
 name = "punktfunk-tray"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "ksni",
@@ -3499,7 +3499,7 @@ checksum = "d55d956fa96f5ec02be2e13af0e20391a5aa83d6a074e3ad368959d0fab299ea"
 
 [[package]]
 name = "pyrowave-sys"
-version = "0.20.1"
+version = "0.21.0"
 dependencies = [
  "bindgen",
  "cmake",