docs: update README and README.tr with accurate skill system, repo URL fix, and /init improvements

fix: remove template placeholder files from memory-bank

refactor: simplify init.md to 4-step minimal instructions

refactor: let Claude ask free-form interview questions in /init

fix: make init.md self-contained — remove subagent delegation

fix: make init.md explicitly call configure-skills.sh as mandatory final step

fix: guard --update mode against same-file cp crashes

fix: configure-skills.sh uses script-relative path instead of CWD

feat: add configure-skills.sh for token-efficient skill management

Update .gitattributes to mark code files as vendored and specify Markdown as primary language

Update .gitattributes with complete vendoring rules

Update .gitattributes to add install.sh linguist-vendored -text rule

Update .gitattributes file with language statistics override

Update .gitattributes to exclude setup files, configuration files, and example utilities from language statistics

Create .gitattributes file to prevent misleading language statistics.