Four theorems on self-masking faults and self-invalidating pins; a sixth bilingual post

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Theorems T24–T27, each worked through with something measured this week:

• T24 — a pin that names a moving target and asserts its content is a scheduled failure. Demonstrated twice: the manifest had been broken since the first merge after it was written, and after I re-pinned it I broke it again within the hour by merging one commit upstream. Cites Dolstra's content-addressed deployment thesis.
• T25 — a guard must exercise the same path as the thing it guards. My own refuse a suite that runs nothing step bypassed the build's link_libc and declared a green suite empty.
• T26 — success returned by a buffered write is a claim about the buffer. File.writer took a buffer in 0.15; save() reported writing a graph load() could not read. Cites Pillai et al., OSDI 2014.
• T27 — a fault that disables its own detector stays dormant indefinitely. Cites Avižienis et al., IEEE TDSC 2004, on fault dormancy.

Post six: 'Each half imported the other' / «Каждая половина импортировала другую», both languages complete.

It includes a correction I would rather publish than quietly amend: I attributed the two binaries' compile errors to my local 0.16 toolchain, and CI on the targeted 0.15.2 reported the same errors. They were real. A diagnosis that has been correct three times running stops being checked and starts being assumed.

Receipt states verified immediately before writing: zig-knowledge-graph#2 merged, its #1 and #3 open, zig-golden-float#99 merged, trinity-training#2 merged.

Both files transpile and publishedPosts() returns six, all with a Russian overlay.