Add valuable reference content from PR #10

Cherry-picked the genuinely unique content from PR #10 and integrated
into existing skills:

seo-audit/references:
- ai-writing-detection.md: AI writing patterns to avoid (em dashes,
  overused phrases, filler words)
- aeo-geo-patterns.md: Answer Engine & Generative Engine Optimization
  content patterns

copy-editing/references:
- plain-english-alternatives.md: Complex to simple word replacements

copywriting/references:
- natural-transitions.md: Transitional phrases for better content flow

Updated SKILL.md files to link to new references.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

skills/copy-editing/references/plain-english-alternatives.md

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+# Plain English Alternatives
+
+Replace complex or pompous words with plain English alternatives.
+
+Source: Plain English Campaign A-Z of Alternative Words (2001), Australian Government Style Manual (2024), plainlanguage.gov
+
+---
+
+## A
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| (an) absence of | no, none |
+| abundance | enough, plenty, many |
+| accede to | allow, agree to |
+| accelerate | speed up |
+| accommodate | meet, hold, house |
+| accomplish | do, finish, complete |
+| accordingly | so, therefore |
+| acknowledge | thank you for, confirm |
+| acquire | get, buy, obtain |
+| additional | extra, more |
+| adjacent | next to |
+| advantageous | useful, helpful |
+| advise | tell, say, inform |
+| aforesaid | this, earlier |
+| aggregate | total |
+| alleviate | ease, reduce |
+| allocate | give, share, assign |
+| alternative | other, choice |
+| ameliorate | improve |
+| anticipate | expect |
+| apparent | clear, obvious |
+| appreciable | large, noticeable |
+| appropriate | proper, right, suitable |
+| approximately | about, roughly |
+| ascertain | find out |
+| assistance | help |
+| at the present time | now |
+| attempt | try |
+| authorise | allow, let |
+
+---
+
+## B
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| belated | late |
+| beneficial | helpful, useful |
+| bestow | give |
+| by means of | by |
+
+---
+
+## C
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| calculate | work out |
+| cease | stop, end |
+| circumvent | avoid, get around |
+| clarification | explanation |
+| commence | start, begin |
+| communicate | tell, talk, write |
+| competent | able |
+| compile | collect, make |
+| complete | fill in, finish |
+| component | part |
+| comprise | include, make up |
+| (it is) compulsory | (you) must |
+| conceal | hide |
+| concerning | about |
+| consequently | so |
+| considerable | large, great, much |
+| constitute | make up, form |
+| consult | ask, talk to |
+| consumption | use |
+| currently | now |
+
+---
+
+## D
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| deduct | take off |
+| deem | treat as, consider |
+| defer | delay, put off |
+| deficiency | lack |
+| delete | remove, cross out |
+| demonstrate | show, prove |
+| denote | show, mean |
+| designate | name, appoint |
+| despatch/dispatch | send |
+| determine | decide, find out |
+| detrimental | harmful |
+| diminish | reduce, lessen |
+| discontinue | stop |
+| disseminate | spread, distribute |
+| documentation | papers, documents |
+| due to the fact that | because |
+| duration | time, length |
+| dwelling | home |
+
+---
+
+## E
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| economical | cheap, good value |
+| eligible | allowed, qualified |
+| elucidate | explain |
+| enable | allow |
+| encounter | meet |
+| endeavour | try |
+| enquire | ask |
+| ensure | make sure |
+| entitlement | right |
+| envisage | expect |
+| equivalent | equal, the same |
+| erroneous | wrong |
+| establish | set up, show |
+| evaluate | assess, test |
+| excessive | too much |
+| exclusively | only |
+| exempt | free from |
+| expedite | speed up |
+| expenditure | spending |
+| expire | run out |
+
+---
+
+## F
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| fabricate | make |
+| facilitate | help, make possible |
+| finalise | finish, complete |
+| following | after |
+| for the purpose of | to, for |
+| for the reason that | because |
+| forthwith | now, at once |
+| forward | send |
+| frequently | often |
+| furnish | give, provide |
+| furthermore | also, and |
+
+---
+
+## G-H
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| generate | produce, create |
+| henceforth | from now on |
+| hitherto | until now |
+
+---
+
+## I
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| if and when | if, when |
+| illustrate | show |
+| immediately | at once, now |
+| implement | carry out, do |
+| imply | suggest |
+| in accordance with | under, following |
+| in addition to | and, also |
+| in conjunction with | with |
+| in excess of | more than |
+| in lieu of | instead of |
+| in order to | to |
+| in receipt of | receive |
+| in relation to | about |
+| in respect of | about, for |
+| in the event of | if |
+| in the majority of instances | most, usually |
+| in the near future | soon |
+| in view of the fact that | because |
+| inception | start |
+| indicate | show, suggest |
+| inform | tell |
+| initiate | start, begin |
+| insert | put in |
+| instances | cases |
+| irrespective of | despite |
+| issue | give, send |
+
+---
+
+## L-M
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| (a) large number of | many |
+| liaise with | work with, talk to |
+| locality | place, area |
+| locate | find |
+| magnitude | size |
+| (it is) mandatory | (you) must |
+| manner | way |
+| modification | change |
+| moreover | also, and |
+
+---
+
+## N-O
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| negligible | small |
+| nevertheless | but, however |
+| notify | tell |
+| notwithstanding | despite, even if |
+| numerous | many |
+| objective | aim, goal |
+| (it is) obligatory | (you) must |
+| obtain | get |
+| occasioned by | caused by |
+| on behalf of | for |
+| on numerous occasions | often |
+| on receipt of | when you get |
+| on the grounds that | because |
+| operate | work, run |
+| optimum | best |
+| option | choice |
+| otherwise | or |
+| outstanding | unpaid |
+| owing to | because |
+
+---
+
+## P
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| partially | partly |
+| participate | take part |
+| particulars | details |
+| per annum | a year |
+| perform | do |
+| permit | let, allow |
+| personnel | staff, people |
+| peruse | read |
+| possess | have, own |
+| practically | almost |
+| predominant | main |
+| prescribe | set |
+| preserve | keep |
+| previous | earlier, before |
+| principal | main |
+| prior to | before |
+| proceed | go ahead |
+| procure | get |
+| prohibit | ban, stop |
+| promptly | quickly |
+| provide | give |
+| provided that | if |
+| provisions | rules, terms |
+| proximity | nearness |
+| purchase | buy |
+| pursuant to | under |
+
+---
+
+## R
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| reconsider | think again |
+| reduction | cut |
+| referred to as | called |
+| regarding | about |
+| reimburse | repay |
+| reiterate | repeat |
+| relating to | about |
+| remain | stay |
+| remainder | rest |
+| remuneration | pay |
+| render | make, give |
+| represent | stand for |
+| request | ask |
+| require | need |
+| residence | home |
+| retain | keep |
+| revised | changed, new |
+
+---
+
+## S
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| scrutinise | examine, check |
+| select | choose |
+| solely | only |
+| specified | given, stated |
+| state | say |
+| statutory | legal, by law |
+| subject to | depending on |
+| submit | send, give |
+| subsequent to | after |
+| subsequently | later |
+| substantial | large, much |
+| sufficient | enough |
+| supplement | add to |
+| supplementary | extra |
+
+---
+
+## T-U
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| terminate | end, stop |
+| thereafter | then |
+| thereby | by this |
+| thus | so |
+| to date | so far |
+| transfer | move |
+| transmit | send |
+| ultimately | in the end |
+| undertake | agree, do |
+| uniform | same |
+| utilise | use |
+
+---
+
+## V-Z
+
+| Complex | Plain Alternative |
+|---------|-------------------|
+| variation | change |
+| virtually | almost |
+| visualise | imagine, see |
+| ways and means | ways |
+| whatsoever | any |
+| with a view to | to |
+| with effect from | from |
+| with reference to | about |
+| with regard to | about |
+| with respect to | about |
+| zone | area |
+
+---
+
+## Phrases to Remove Entirely
+
+These phrases often add nothing. Delete them:
+
+- a total of
+- absolutely
+- actually
+- all things being equal
+- as a matter of fact
+- at the end of the day
+- at this moment in time
+- basically
+- currently (when "now" or nothing works)
+- I am of the opinion that (use: I think)
+- in due course (use: soon, or say when)
+- in the final analysis
+- it should be understood
+- last but not least
+- obviously
+- of course
+- quite
+- really
+- the fact of the matter is
+- to all intents and purposes
+- very