Outbound reference link validation, closed out. Checked all 8 external links
in resources/external-ai-tools.html — 7 confirmed live, one
(the Grok link, x.grok.com) found stale and corrected to
grok.com after research showed xAI's current canonical URL. In the
process, discovered external-ai-tools.html itself was an orphaned
page — zero internal links pointing to it despite being fully built and
valid. Added a hub-link card in resources-index.html's External
Resources section to fix that.
Ran a full breadcrumb audit across seven directories (TMA/LLM,
TMA/AI, learning, ai-stack,
deep-dive, deep-dive/cli-tools, resources)
using a new directory-scoped grep script. Result: everything already has
breadcrumbs. The TMA breadcrumb item — carried on the running list since
Day 30 — turns out to have quietly closed out during the Day 38 rename
sprint and just never got struck from the list.
Spent the back half of the session designing and building a Perl script to
audit and patch target= attributes on outbound links across the
CMDS and EXPANDED sections of the LearnLinux site. The script reads each file
to <body>, finds <a href> tags missing a
target, and inserts an incrementing TARGn value
(starting at 1000). The counter persists across files and directories via a
small counter file, so numbering stays continuous across the whole job.
Output is written as .tgtrun files rather than touching originals,
with a timestamped DONE log for traceability. First real "meat" script of this
scope built and fully understood end-to-end in about an hour — close to
the 9x efficiency ratio established months ago.
Also confirmed: the "Jump to Latest Entry" anchor added Day 39 is working well in real use.
Next up (Day 41): test the Perl script against real files,
build the wrapper shell script (file list, SAVE-dir handling, batch cleanup
reminder) and promote.sh, then run the full CMDS/EXPANDED pass.
Glossary note box update also carried forward.
Day 40 complete • July 23, 2026 • Craig & Claude