feat: Complete fleet — 94 skills across 10+ domains

Pulled ALL skills from 15 source repositories:
- anthropics/skills: 16 (docs, design, MCP, testing)
- obra/superpowers: 14 (TDD, debugging, agents, planning)
- coreyhaines31/marketingskills: 25 (marketing, CRO, SEO, growth)
- better-auth/skills: 5 (auth patterns)
- vercel-labs/agent-skills: 5 (React, design, Vercel)
- antfu/skills: 16 (Vue, Vite, Vitest, pnpm, Turborepo)
- Plus 13 individual skills from various repos

Mosaic Stack is not limited to coding — the Orchestrator and
subagents serve coding, business, design, marketing, writing,
logistics, analysis, and more.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

skills/pptx/scripts/office/soffice.py

@@ -0,0 +1,183 @@
+"""
+Helper for running LibreOffice (soffice) in environments where AF_UNIX
+sockets may be blocked (e.g., sandboxed VMs).  Detects the restriction
+at runtime and applies an LD_PRELOAD shim if needed.
+
+Usage:
+    from office.soffice import run_soffice, get_soffice_env
+
+    # Option 1 – run soffice directly
+    result = run_soffice(["--headless", "--convert-to", "pdf", "input.docx"])
+
+    # Option 2 – get env dict for your own subprocess calls
+    env = get_soffice_env()
+    subprocess.run(["soffice", ...], env=env)
+"""
+
+import os
+import socket
+import subprocess
+import tempfile
+from pathlib import Path
+
+
+def get_soffice_env() -> dict:
+    env = os.environ.copy()
+    env["SAL_USE_VCLPLUGIN"] = "svp"
+
+    if _needs_shim():
+        shim = _ensure_shim()
+        env["LD_PRELOAD"] = str(shim)
+
+    return env
+
+
+def run_soffice(args: list[str], **kwargs) -> subprocess.CompletedProcess:
+    env = get_soffice_env()
+    return subprocess.run(["soffice"] + args, env=env, **kwargs)
+
+
+
+_SHIM_SO = Path(tempfile.gettempdir()) / "lo_socket_shim.so"
+
+
+def _needs_shim() -> bool:
+    try:
+        s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+        s.close()
+        return False
+    except OSError:
+        return True
+
+
+def _ensure_shim() -> Path:
+    if _SHIM_SO.exists():
+        return _SHIM_SO
+
+    src = Path(tempfile.gettempdir()) / "lo_socket_shim.c"
+    src.write_text(_SHIM_SOURCE)
+    subprocess.run(
+        ["gcc", "-shared", "-fPIC", "-o", str(_SHIM_SO), str(src), "-ldl"],
+        check=True,
+        capture_output=True,
+    )
+    src.unlink()
+    return _SHIM_SO
+
+
+
+_SHIM_SOURCE = r"""
+#define _GNU_SOURCE
+#include <dlfcn.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+static int (*real_socket)(int, int, int);
+static int (*real_socketpair)(int, int, int, int[2]);
+static int (*real_listen)(int, int);
+static int (*real_accept)(int, struct sockaddr *, socklen_t *);
+static int (*real_close)(int);
+static int (*real_read)(int, void *, size_t);
+
+/* Per-FD bookkeeping (FDs >= 1024 are passed through unshimmed). */
+static int is_shimmed[1024];
+static int peer_of[1024];
+static int wake_r[1024];            /* accept() blocks reading this */
+static int wake_w[1024];            /* close()  writes to this      */
+static int listener_fd = -1;        /* FD that received listen()    */
+
+__attribute__((constructor))
+static void init(void) {
+    real_socket     = dlsym(RTLD_NEXT, "socket");
+    real_socketpair = dlsym(RTLD_NEXT, "socketpair");
+    real_listen     = dlsym(RTLD_NEXT, "listen");
+    real_accept     = dlsym(RTLD_NEXT, "accept");
+    real_close      = dlsym(RTLD_NEXT, "close");
+    real_read       = dlsym(RTLD_NEXT, "read");
+    for (int i = 0; i < 1024; i++) {
+        peer_of[i] = -1;
+        wake_r[i]  = -1;
+        wake_w[i]  = -1;
+    }
+}
+
+/* ---- socket ---------------------------------------------------------- */
+int socket(int domain, int type, int protocol) {
+    if (domain == AF_UNIX) {
+        int fd = real_socket(domain, type, protocol);
+        if (fd >= 0) return fd;
+        /* socket(AF_UNIX) blocked – fall back to socketpair(). */
+        int sv[2];
+        if (real_socketpair(domain, type, protocol, sv) == 0) {
+            if (sv[0] >= 0 && sv[0] < 1024) {
+                is_shimmed[sv[0]] = 1;
+                peer_of[sv[0]]    = sv[1];
+                int wp[2];
+                if (pipe(wp) == 0) {
+                    wake_r[sv[0]] = wp[0];
+                    wake_w[sv[0]] = wp[1];
+                }
+            }
+            return sv[0];
+        }
+        errno = EPERM;
+        return -1;
+    }
+    return real_socket(domain, type, protocol);
+}
+
+/* ---- listen ---------------------------------------------------------- */
+int listen(int sockfd, int backlog) {
+    if (sockfd >= 0 && sockfd < 1024 && is_shimmed[sockfd]) {
+        listener_fd = sockfd;
+        return 0;
+    }
+    return real_listen(sockfd, backlog);
+}
+
+/* ---- accept ---------------------------------------------------------- */
+int accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen) {
+    if (sockfd >= 0 && sockfd < 1024 && is_shimmed[sockfd]) {
+        /* Block until close() writes to the wake pipe. */
+        if (wake_r[sockfd] >= 0) {
+            char buf;
+            real_read(wake_r[sockfd], &buf, 1);
+        }
+        errno = ECONNABORTED;
+        return -1;
+    }
+    return real_accept(sockfd, addr, addrlen);
+}
+
+/* ---- close ----------------------------------------------------------- */
+int close(int fd) {
+    if (fd >= 0 && fd < 1024 && is_shimmed[fd]) {
+        int was_listener = (fd == listener_fd);
+        is_shimmed[fd] = 0;
+
+        if (wake_w[fd] >= 0) {              /* unblock accept() */
+            char c = 0;
+            write(wake_w[fd], &c, 1);
+            real_close(wake_w[fd]);
+            wake_w[fd] = -1;
+        }
+        if (wake_r[fd] >= 0) { real_close(wake_r[fd]); wake_r[fd]  = -1; }
+        if (peer_of[fd] >= 0) { real_close(peer_of[fd]); peer_of[fd] = -1; }
+
+        if (was_listener)
+            _exit(0);                        /* conversion done – exit */
+    }
+    return real_close(fd);
+}
+"""
+
+
+
+if __name__ == "__main__":
+    import sys
+    result = run_soffice(sys.argv[1:])
+    sys.exit(result.returncode)