Add panto-rsvp: RSVP reading mode for assistant text

Standalone opt-in extension that plays the latest assistant text block one
word at a time above the input, using the core mount, input-mode and
highlight("markdown") APIs settled in pantograph's rsvp-extension-plan.
Registers /rsvp; users bind it via "ctrl+s" = "/rsvp" under [keys].

Player and config logic are pure Lua with an assert-based self-check run
against a host/timer stub, since the core APIs land separately.

1 files changed, 18 insertions, 0 deletions

diff --git a/LICENSE b/LICENSE
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index 0000000..876f03c
--- /dev/null
+++ b/LICENSE
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+MIT License
+
+Copyright (c) 2026 Travis Parker
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+associated documentation files (the "Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the
+following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial
+portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
+EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+USE OR OTHER DEALINGS IN THE SOFTWARE.