revert: restore pre-upstream-merge baseline (tree of 3b673150b)

Roll the tree back to the pre-merge tip 3b673150b, undoing the upstream sync merge 72f4f186d (303 files) and the 13 post-merge commits layered on top of it.

Purpose: restore the last pre-sync baseline so the reported OMEMO/OTR encryption regressions can be reproduced against a known-good state and the upstream sync ruled in or out as the cause. Nothing is dropped from history; the merge and every post-merge commit remain reachable and can be cherry-picked back selectively.

Baseline:     3b673150b chore(chatlog): disable background message file logging (stage 1)

Undoes merge: 72f4f186d merge: sync upstream profanity-im/profanity

Dockerfile.debian

@@ -0,0 +1,60 @@
+# Build the latest Debian testing image
+FROM debian:testing
+
+ENV DEBIAN_FRONTEND="noninteractive"
+ENV TERM=xterm
+ENV CC="ccache gcc"
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  autoconf \
+  autoconf-archive \
+  automake \
+  ca-certificates \
+  ccache \
+  gcc \
+  git \
+  lcov \
+  libcmocka-dev \
+  libcurl3-dev \
+  libgcrypt-dev \
+  libglib2.0-dev \
+  libgpgme11-dev \
+  libgtk2.0-dev \
+  libmicrohttpd-dev \
+  libncursesw5-dev \
+  libnotify-dev \
+  libotr5-dev \
+  libreadline-dev \
+  libsignal-protocol-c-dev \
+  libssl-dev \
+  libtool \
+  libxss-dev \
+  make \
+  pkg-config \
+  python3-dev \
+  python-dev-is-python3 \
+  valgrind \
+  libsqlite3-dev \
+  libgdk-pixbuf-2.0-dev \
+  libqrencode-dev
+
+RUN mkdir -p /usr/src/{stabber,libstrophe,profanity}
+WORKDIR /usr/src
+
+RUN git clone --depth 1 https://git.jabber.space/devs/stabber
+RUN git clone --depth 1 https://github.com/strophe/libstrophe
+
+WORKDIR /usr/src/stabber
+RUN ./bootstrap.sh
+RUN ./configure --prefix=/usr --disable-dependency-tracking
+RUN make -j$(nproc)
+RUN make install
+
+WORKDIR /usr/src/libstrophe
+RUN ./bootstrap.sh
+RUN ./configure --prefix=/usr
+RUN make -j$(nproc)
+RUN make install
+
+WORKDIR /usr/src/profanity
+COPY . /usr/src/profanity