Correct the R dependency: HiddenMarkov (CRAN) for HMM regime
detection (Viterbi, Baum-Welch); JSON I/O for Hub protocol is
hand-rolled, not jsonlite. Everything else uses base R primitives.
Add R + jsonlite to SessionStart hook (minimal deps — no CRAN
statistical packages). Update M3a spec §3: GARCH, Heston, HMM, DCC,
copula, jump-diffusion, fBM all hand-rolled with base R primitives.
Replaced warn-and-continue pattern with set -euo pipefail and die().
If a toolchain install fails, the session cannot build — stop immediately.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Ephemeral web containers lose installed tools on restart. Add an idempotent,
non-fatal SessionStart hook that (re)installs GNAT+gprbuild+GnuCOBOL (apt),
ponyc (ponyup), and Alire alr 2.1.1 when missing, and ensures ponyc is on PATH.
Appended alongside the existing R/Octave session-start hook. User-authorized.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015hmgREHNsxYCuim33yUF2c
Installs r-base-core (Drive-Box R drivers/tests) and octave (ETR torus
tests) in Claude Code on the web. Synchronous, idempotent, remote-only;
skips packages already present. Ada/Alire left out by design.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015hmgREHNsxYCuim33yUF2c
