feat(splash+install): v0.47 — yellow drop-shadow + post-install launch prompt + Windows guidance

1. Splash (bin/kei) — благородная насыщенная жёлто-бронзовая drop-shadow
   on the KEISEI ASCII art:
   - New CS color: \033[1;38;5;130m (noble saturated bronze-gold).
   - Shadow block printed FIRST (6 lines, offset +2 cols right).
   - \e[7A cursor-up returns to start; blue art overwrites where they overlap.
   - Visible shadow: right-edge 2-col tail on blue rows 2-6 + full
     shadow row 6 standalone (offset down-right).
   - TTY-gated: no terminal → no shadow, no colors (existing fallback).

2. bootstrap.sh — post-install launch prompt:
   "Запустить kei сейчас? [Y/n]" at the very end, after all install +
   onboarding + next-steps text. Default Y on Enter.
   - Stdin-TTY gate only (rule: tty-interactivity-gate.md — `-t 1` would
     falsely skip under curl|bash because the bootstrap log tees stdout).
   - Reads from /dev/tty explicitly so curl|bash piped install still works.
   - KEI_NO_AUTORUN=1 env opt-out for CI / scripts.

3. README — Platforms section: honest Windows status.
   - macOS + Linux: fully supported.
   - Windows: substrate is Bash-only; WSL2 recommended path; MCP-server
     binary (.exe) ships in releases for MCP-only mode; native PowerShell
     port NOT on roadmap (WSL gives 100% coverage with 0 code duplication).

4. v0.47 version bumps: plugin.json + bin/kei splash + README counts header.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

README.md

@@ -46,12 +46,30 @@ sleep consolidates 30-session windows into morning markdown reports.
   updates, agent regeneration, DNA index refresh, keimd graph
   reindex. Auto-self-indexing via kei-registry SQLite.
 
-## By the numbers (v0.46)
+## By the numbers (v0.47)
 
 110 Rust crates · 69 skills · 54 hooks · 38 agent manifests ·
 86 substrate blocks · 18 capability atoms · 7 substrate roles ·
 565 indexed DNAs · 6 install profiles (minimal → full).
 
+## Platforms
+
+- **macOS** (arm64 + x64) — fully supported, primary dev target.
+- **Linux** (Ubuntu, Debian, Fedora, Arch — x64 + arm64) — fully supported.
+- **Windows** — substrate itself is Bash-only, but the **MCP server binary**
+  ships as `kei-mcp-server-windows-x64.exe` in every release. Two
+  recommended paths:
+  - **WSL2** (recommended) — install Windows Subsystem for Linux,
+    then run `bootstrap.sh` inside Ubuntu/Debian as normal. Full
+    substrate works.
+  - **MCP-only** — drop `kei-mcp-server-windows-x64.exe` into your
+    Claude Desktop / VS Code MCP config to get `spawn_agent` +
+    `kei_bash`/`kei_edit`/`kei_write` tools, without the full
+    Bash-based substrate. Skills, hooks, and `kei` CLI not available
+    in this mode.
+  - Native PowerShell port: not on the roadmap (would double maintenance
+    surface; WSL gives 100% coverage with 0 duplication).
+
 ## Maturity matrix
 
 The substrate ships as a layered set of components at different

bin/kei

@@ -217,17 +217,30 @@ splash() {
   as="$(active_sessions)"
 
   # Only color if stdout is a tty. Brand palette: голубой (sky-blue) + жёлтый (gold).
-  local C0= C1= C2= C3= CV=
+  local C0= C1= C2= C3= CV= CS= GO_BACK= SHADOW_BLOCK=
   if [ -t 1 ]; then
     C0=$'\033[0m'
     C1=$'\033[1;38;5;39m'    # голубой (sky-blue) — logo
     C2=$'\033[1;38;5;220m'   # жёлтый (gold) — brand line
     C3=$'\033[2;38;5;39m'    # dim blue — separators
     CV=$'\033[1;38;5;220m'   # жёлтый — field values
+    CS=$'\033[1;38;5;130m'   # благородная насыщенная жёлто-бронзовая тень
+    # v0.47 drop shadow: print shadow first (offset +2 cols right),
+    # then \e[7A returns cursor to start of art, blue letters overwrite
+    # shadow where they overlap. Visible shadow = right-edge tail +
+    # one full row below blue's bottom (offset +1 row down).
+    GO_BACK=$'\033[7A'
+    SHADOW_BLOCK="
+${CS}      ██╗  ██╗███████╗██╗███████╗███████╗██╗${C0}
+${CS}      ██║ ██╔╝██╔════╝██║██╔════╝██╔════╝██║${C0}
+${CS}      █████╔╝ █████╗  ██║███████╗█████╗  ██║${C0}
+${CS}      ██╔═██╗ ██╔══╝  ██║╚════██║██╔══╝  ██║${C0}
+${CS}      ██║  ██╗███████╗██║███████║███████╗██║${C0}
+${CS}      ╚═╝  ╚═╝╚══════╝╚═╝╚══════╝╚══════╝╚═╝${C0}${GO_BACK}"
   fi
 
   cat <<EOF
-
+${SHADOW_BLOCK}
 ${C1}    ██╗  ██╗███████╗██╗███████╗███████╗██╗${C0}
 ${C1}    ██║ ██╔╝██╔════╝██║██╔════╝██╔════╝██║${C0}
 ${C1}    █████╔╝ █████╗  ██║███████╗█████╗  ██║${C0}
@@ -235,7 +248,7 @@ ${C1}    ██╔═██╗ ██╔══╝  ██║╚════█
 ${C1}    ██║  ██╗███████╗██║███████║███████╗██║${C0}
 ${C1}    ╚═╝  ╚═╝╚══════╝╚═╝╚══════╝╚══════╝╚═╝${C0}
 
-${C2}    KeiSeiKit · substrate v0.46${C0}
+${C2}    KeiSeiKit · substrate v0.47${C0}
 ${C3}    ─────────────────────────────────────${C0}
       primary CLI    : ${CV}${PRIMARY}${C0}
       profile        : ${CV}${p}${C0}

bootstrap.sh

@@ -230,3 +230,22 @@ log "  - Or source the rc file the installer wrote (Bash: ~/.bashrc, Zsh: ~/.zsh
 log "  - Run kei-doctor for a full health diagnostic."
 log "  - For cortex profile: run /cortex-setup inside Claude Code."
 log "  - For sleep layer: run /sleep-setup inside Claude Code."
+
+# v0.47: offer to launch `kei` for a first status look.
+# Gate on stdin TTY only (rule: tty-interactivity-gate.md) — `-t 1` would
+# falsely skip under curl|bash because the bootstrap log tees stdout.
+KEI_BIN_PATH="$HOME/.claude/bin/kei"
+if [ -x "$KEI_BIN_PATH" ] && [ -t 0 ] && [ "${KEI_NO_AUTORUN:-0}" != "1" ]; then
+    log ""
+    printf '  → Запустить kei сейчас? [Y/n] ' >&2
+    read -r _reply </dev/tty || _reply=""
+    case "${_reply:-Y}" in
+        [Nn]*)
+            log "  (skipped — run 'kei' anytime to see substrate status)"
+            ;;
+        *)
+            log ""
+            "$KEI_BIN_PATH" || true
+            ;;
+    esac
+fi

plugin.json

@@ -3,7 +3,7 @@
   "name": "keisei",
   "displayName": "KeiSei",
   "description": "Constructor Pattern multi-LLM agent substrate — 38 agents, 69 skills, 54 hooks, 86 blocks. Cross-CLI policy enforcement (Claude/Grok/Copilot/Agy/Kimi) via kei-mcp + kei_bash/kei_edit/kei_write. Rust primitives via classic ./install.sh.",
-  "version": "0.46.0",
+  "version": "0.47.0",
   "homepage": "https://keisei.app",
   "repository": "https://github.com/KeiSeiLab/KeiSeiKit-1.0.git",
   "author": {