v0.9.75

Changes since v0.9.74:

• Allow read_file/grep/glob under $WORK_HOME/plugins.
• Add dialogue monotony, choice-cost, and volume emotion-curve checks.
• Add emotional flatline and pressure checks to scene contracts.
• Add tic-line and tell-verb density advisories; fix prop landing scope.
• Tighten novel scene contracts, write packs, and deslop gates.