Add r2sleigh native analysis integration

[0verflowme]

This replaces #25913 with a clean single-commit branch based on current upstream/master. The old PR had accumulated noisy history from rebases and co-authorship churn, so this PR keeps the r2sleigh integration reviewable on its own.

Why

../r2sleigh needs a native integration path into radare2 analysis data instead of relying on ad-hoc command output. This PR adds the minimal radare2-side seams needed for r2sleigh to consume typed function context, track assumptions, and apply analysis mutations while keeping the integration optional and preserving existing CLI/test behavior when the sleigh analysis plugin is not available.

What Changes

• Add native analysis integration APIs for typed function context, function assumptions, analysis mutations, dirty epochs, and context hashes.
• Add analysis-depth-aware post-analysis hooks so plugins such as r2sleigh can run balanced or aggressive follow-up analysis from aaa/aaaa without hard-coding plugin behavior in command output.
• Route pdd/cmd.pdc discovery to the sleigh decompiler when the sla analysis plugin is available, while keeping existing fallback behavior unchanged.
• Persist function assumptions in project save/load output so r2sleigh-derived context survives project round trips.
• Route direct type-link writes/removals through r_anal_types_* helpers so tl, tl-, hint/global type links, and zero-address links correctly update dirty epochs and type context hashes.
• Keep no-capstone builds working by avoiding direct libr_core references to plugin-only anal_tp symbols.
• Keep aaa logs stable for r2pipe/r2r consumers by making the new post-analysis hooks silent.
• Preserve default void signatures for API, pdc, and zignature consumers while keeping legacy afcf text output stable for var-only functions.

Tests

• make -j > /dev/null
• make -C test/unit bin/test_anal_function bin/test_anal_types LIBDIR='../../libr/core -L../../libr/main -L../../libr/config -L../../libr/debug -L../../libr/bin -L../../libr/lang -L../../libr/anal -L../../libr/bp -L../../libr/egg -L../../libr/asm -L../../libr/flag -L../../libr/search -L../../libr/syscall -L../../libr/fs -L../../libr/io -L../../libr/socket -L../../libr/cons -L../../libr/magic -L../../libr/muta -L../../libr/arch -L../../libr/esil -L../../libr/reg -L../../libr/util'
• DYLD_LIBRARY_PATH=... ./test/unit/bin/test_anal_function
• DYLD_LIBRARY_PATH=... ./test/unit/bin/test_anal_types
• R2R_RADARE2=/private/tmp/r2clean-r2 r2r -u test/db/cmd/r2pipe2 (5 OK)
• R2R_RADARE2=/private/tmp/r2clean-r2 r2r -u test/db/cmd/cmd_af (18 OK / 2 BR)
• R2R_RADARE2=/private/tmp/r2clean-r2 r2r -u test/db/cmd/cmd_pdc (OK)
• R2R_RADARE2=/private/tmp/r2clean-r2 r2r -u test/db/cmd/cmd_zignature (OK)
• R2R_RADARE2=/private/tmp/r2clean-r2 r2r -u test/db/cmd/projects (37 OK / 5 BR)

CI Notes

The latest fixes address the previously failing linux-nocs, linux-acr-gperf, linux-tinyasan-fuzz, and TCC jobs by preserving plugin boundaries, command-log stability, and signature formatting compatibility.